Anne Hathaway took the 2013 Met Gala's punk theme to heart on Monday when she flashed a whole lot of sideboob on the red carpet.

Not only did the "Les Miserables" actress dye her brunette locks white blond, but she ditched her good girl image in favour of a sheer vintage Valentino gown that looked like it could slide down her at any given moment.

Is Anne making a case for more boob-showing on the red carpet? All eyes were on the 30-year-old's, um, chest, when she wore a pale pink Prada gown to the Oscars this year that highlighted what appeared to be her nipples.

Hathaway wasn't the only actress who didn't care whether their sideboob was showing.

Tom Cruise's ex, Katie Holmes, wore a revenge Calvin Klein stunner, which revealed more than a glimpse of her sizeable side assets.

Even actress Maggie Gyllenhaal, who doesn't normally flaunt her breasts on the red carpet, wore a sexy red gown that made a case for more boob-revealing looks.

Guess this is what happens when Anna Wintour asks you to go punk!

Check out the celebrities who sported sideboob at the 2013 Met Gala:

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  • Anne Hathaway

  • Katie Holmes

  • Maggie Gyllenhaal

  • Kirsten Dunst

  • Heidi Klum

  • Gisele Bundchen

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