After rumours of a boob job swirled when "Nashville" star Hayden Panettiere was spotted in a tiny bikini in April, the actress decided to cover up her assets at the Sports Emmy Awards Reception in New York on Tuesday.

Standing beside her 6'6 tall boxer boyfriend, Wladimir Klitschko, the pint-size former "Heroes" star (who stands at only 5'0 tall) kept us guessing as to whether she has gone under the knife.

Wearing a silver halterneck dress, the 23-year-old blond beauty looked happy to be on the arm of the towering Klitschko. With her hair swept to the side in loose waves, Hayden struck a glamorous pose à la Juliette Barnes, the diva country singer Hayden plays on the hit TV show "Nashville."

It's no wonder that Panettiere is looking so happy; after a year-long breakup, Hayden and Wladimir reconciled in April and have sparked rumours that they might be engaged.

Boob job or no boob job, Hayden looks gorgeous.

hayden panettiere

See Hayden's many red carpet looks:

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  • Hayden Panettiere

    Actress/model Hayden Panettiere attends the 34th Annual Sports Emmy Awards Reception at Frederick P. Rose Hall, Jazz at Lincoln Center on May 7, 2013 in New York City.

  • Hayden Panettiere

    Boxer Wladimir Klitschko and actress/model Hayden Panettiere attend the 34th Annual Sports Emmy Awards Reception at Frederick P. Rose Hall, Jazz at Lincoln Center on May 7, 2013 in New York City.

  • Hayden Panettiere

    Actress Hayden Panettiere, from the ABC series "Nashville," attends the White House Correspondents' Dinner at the Washington Hilton on Saturday April 27, 2013 in Washington.

  • Hayden Panettiere

    Hayden Panettiere attends The Paley Center For Media's PaleyFest 2013 honoring 'Nashville' at the Saban Theatre on March 9, 2013 in Beverly Hills, California.

  • Hayden Panettiere

    Hayden Panettiere (L) and Connie Britton attend The Paley Center For Media's PaleyFest 2013 honoring 'Nashville' at the Saban Theatre on March 9, 2013 in Beverly Hills, California.

  • Hayden Panettiere

    Hayden Panettiere attends the Super Bowl party sponsored by Lacoste and Mercedes-Benz at The Elms Mansion on February 2, 2013 in New Orleans, Louisiana. (Photo by Gustavo Caballero/Getty Images for GQ)

  • Hayden Panettiere

    Hayden Panettiere attends the 14th Annual Warner Bros. And InStyle Golden Globe Awards After Party held at the Oasis Courtyard at the Beverly Hilton Hotel on January 13, 2013 in Beverly Hills, California. (Photo by Jason Merritt/Getty Images)

  • Hayden Panettiere

    Hayden Panettiere attends Dom Perignon and W Magazine's celebration of The Golden Globes at Chateau Marmont on January 11, 2013 in Los Angeles, California.

  • Hayden Panettiere

    Hayden Panettiere attends the 2012 CMT 'Artists Of The Year' Awardat The Factory At Franklin on December 3, 2012 in Franklin, Tennessee.

  • Hayden Panettiere

    Hosts Hayden Panettiere and JoeDon Rooney of Rascal Flatts speak onstage during the 2012 CMT Artists Of The Year at The Factory at Franklin on December 3, 2012 in Franklin, Tennessee.

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