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Ashlee Simpson, Pete Wentz, Rebecca Romijn & More At Kentucky Derby

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Joey Fatone doesn't look like he fully committed to his look, while Ashlee Simpson and Pete Wentz went almost completely back in time.

After hitting up a fancy gala the night before, the stars attended the 136th Kentucky Derby, though I bet if you asked any of them what happened they would probably say "Uh...I wore a big hat." That's okay, the only reason I would have known what happened if I went would be because I bet a bunch of money on which ever horse had the prettiest name.

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