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Britney Spears made headlines when she showed up to the first day of her  "X Factor" gig wearing a revealing dress -- and now, Ashley Tisdale is getting in on the hot pink action!

The 26-year-old actress showed up to the opening of Japanese restaurant Mizumi at the Wynn in Las Vegas last night wearing the exact same neon Brian Lichtenberg dress, which brings focus straight to the cleavage thanks to its sheer material.

But ... who pulled off the look better?

We're giving Tisdale the win here for the more flattering fit and more maintained hair.

What do you think? Vote in the gallery above!


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