Who knew that underneath that astronaut suit there were legs of steel?

Sandra Bullock showed what her mama gave her at the "Gravity" London Film Festival premiere on Thursday in an eye-popping lace Stella McCartney mini dress.

The 49-year-old looked better than celebs half her age with her shiny brunette hair, which was styled into long loose waves, glowing skin and to-die-for gams, which were showed off in all their glory in black satin Charlotte Olympia peep-toe pumps.

Enviable legs aside, George Clooney's bestie rocked an on-trend berry lip colour (the perfect shade for fall 2013) and kept the rest of her makeup simple with a light pink blush and smokey eyes.

The ensemble is a wild 180 from the androgynous suit Sandy was spotted wearing on Wednesday but the one element both outfits have in common is that they showed off her svelte bod to perfection. (Here's a lesson: You don't need to wear revealing clothes to highlight your figure.)

One thing's for sure: The mom's well-kept body wasn't the only cause for celebration. "Gravity" has broken box office records, taking in $55.5 million in North American ticket sales during its opening weekend, which is reportedly the biggest October opening ever and the biggest openings for both Sandra and co-star Clooney.

A toast to Sandy!

sandra bullock

Sandra and George are so cute together:

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  • The Peggy Siegal Company and Warner Brothers Pictures Hosts a Special Lunch Honoring "GRAVITY"

    This image released by Starpix shows Sandra Bullock, left, and George Clooney at luncheon honoring the film "Gravity," and hosted by The Peggy Siegal Company and Warner Brothers Pictures at The Explorers Club, Wednesday, Oct. 2, 2013 in New York. (AP Photo/Starpix, Dave Allocca) -PICTURED: Sandra Bullock and George Clooney -PHOTO by: Dave Allocca/Startraksphoto.com -File name: DA560447.JPG -Location: The Explorers Club Editorial - Rights Managed Image - Please contact www.startraksphoto.com for licensing fee Startraks Photo New York, NY For licensing please call 212-414-9464 or email sales@startraksphoto.com

  • George Clooney, Sandra Bullock

    Actors George Clooney and Sandra Bullock attend the premiere of "Gravity" at the AMC Lincoln Square Theaters on Tuesday, Oct. 1, 2013, in New York. (Photo by Evan Agostini/Invision/AP)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actors Sandra Bullock (L) and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Producer David Heyman attends an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: (L-R) Director Alfonso Cuaron, Sandra Bullock and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actor George Clooney attends an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actors Sandra Bullock (L) and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actors Sandra Bullock (L) and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actors Sandra Bullock (L) and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: (L-R) Director Alfonso Cuaron, Sandra Bullock and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actor George Clooney attends an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: (L-R)The Academy Of Motion Picture Arts And Sciences New York Events Director Patrick Harrison, Alfonso Cuaron, Sandra Bullock and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actors Sandra Bullock (L) and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: (L-R) New York Events Director of the The Academy Of Motion Picture Arts And Sciences Patrick Harrison, Jonas Cuaron, George Clooney, Sandra Bullock, Alfonso Cuaron and David Heyman attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: (L-R) Director Alfonso Cuaron, Sandra Bullock, George Clooney, Jonas Cuaron and David Heyman attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actors Sandra Bullock (L) and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actress Sandra Bullock attends an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actors Sandra Bullock (L) and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actors Sandra Bullock (L) and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: (L-R) Director Alfonso Cuaron, Sandra Bullock and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actress Sandra Bullock attends an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actors Sandra Bullock (L) and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actor George Clooney attends an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • The Academy Of Motion Picture Arts And Sciences Hosts An Official Academy Members Screening Of "Gravity"

    NEW YORK, NY - OCTOBER 02: Actors Sandra Bullock (L) and George Clooney attend an official screening of 'Gravity' for Academy members hosted by The Academy of Motion Picture Arts and Sciences on October 2, 2013 in New York City. (Photo by Brad Barket/Getty Images for Academy of Motion Picture Arts and Sciences)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney and Sandra Bullock attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: Sandra Bullock arrives at the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: Sandra Bullock attends at the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney and Sandra Bullock attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: Sandra Bullock attends at the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney and Sandra Bullock attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney and Sandra Bullock attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney and Sandra Bullock attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: Sandra Bullock attends at the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: Sandra Bullock attends at the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney and Sandra Bullock attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney and Sandra Bullock attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney and Sandra Bullock attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)

  • "Gravity" New York Premiere - Outside Arrivals

    NEW YORK, NY - OCTOBER 01: George Clooney and Sandra Bullock attends the 'Gravity' premiere at AMC Lincoln Square Theater on October 1, 2013 in New York City. (Photo by Dave Kotinsky/Getty Images)