It's a style showdown between a country music star and a big-screen siren.

Miranda Lambert showed off her body in this Roberto Cavalli gown at the CMA Awards on Wednesday. The singer -- who turns 30 on Sunday -- joked that her she slimmer silhouette was the result of banning Cheetos.

She's not the only star who wore this beautiful blue dress.

Sharon Stone turned heads in the same gown at the Cannes Film Festival back in May. As if the plunging neckline wasn't dramatic enough, the 55-year-old actress added a giant statement necklace.

Both women looked fantastic, but we have to give the nod to Miranda. We love her matching sapphire earrings and blown out hair. She's having a red carpet moment. Sharon's necklace is a little distracting, and her hair looked a little limp compared to Miranda's.

Do you agree? Click on the "Launch Gallery" link above to cast your vote!

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