Style Showdown: Mariah Carey as Classy as Kate Winslet?

As much as we love Mariah Carey, she isn't exactly what we'd call an elegant dresser. Kate Winslet, on the other hand, is the epitome of refined glamour, with hit after hit on the red carpet. So imagine our surprise when Mimi not only showed up to last night's Precious premiere in the same Zac Posen gown Kate wore to the BAFTAs, but she also managed to look just as classy as the actress!

This is a difficult showdown to judge. On the one hand, Kate wins for wearing it first—and her red lips and updo only added to the Old Hollywood style of the mermaid dress. On the other hand, we expect this perfection from the Oscar winner.

Since both of their bodies look equally slamming, we're going to have to give this one to Mariah for stepping outside her revealing comfort zone.

Do you agree? Vote on which star you think styled Posen's curve-hugging creation better in mystyle's Style Showdown gallery. Plus, find out who else wore seconds at the Precious premiere!