Copycats! Who Wore the Red Dress Best, Rosie Huntington-Whiteley or Katy Perry?

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Talk about red hot! Rosie Huntington-Whiteley, aka that super hot chick from Transformers 3, stepped out to the flick’s premiere last night in a long, sparkly, tight, and super sexy red dress. And we couldn’t help but be reminded of a very similar sparkly, tight, super sexy red dress that Katy Perry wore on stage a few months ago. So this might be the toughest call of all tough calls ever since both Rosie and Katy are really, really, ridiculously good looking, but who do YOU think wore the red dress best?

MORE: 10 Things to Know About Transformers’ Rosie Huntington-Whiteley!

Peep the pics and vote for your fave below!