The greatest hits of the red carpet on music's biggest night.
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Hottest Stars at the 2015 Grammys
The 57th Grammy Awards aired on CBS Sunday night. Who won? Who cares! As Jennifer Lopez once proved in her plunging green Versace dress at the 2000 Grammys—and yes, we still remember J-Lo's iconic look 15 years later—the night's most memorable moments happen before the ceremony even airs. Here are the red carpet's "greatest hits," starting with pop starlet Katy Perry, fresh off the most watched Super Bowl Halftime Show of all time (118.5 million viewers).