it kinda sounds like Demi ripped off Katy Perry's I Kissed a Girl song... but tell me what do you think of her new song. watch Below...

Justin Timberlake is the ultimate wedding guest.

Following the U.S. Supreme Court's landmark decision to legalize gay marriage across the nation on Friday, Jessica Biel's friend Dana Panzer married Amy Wicker, and Justin Timberlake was there to make their day even more special.

Just as we hoped, he didn't just show up as a guest to celebrate the occasion, he performed too!


"All the fellas gonna look at the ladies, who just got married tonight," Timberlake sang to the brides and their guests to the familiar tune of his hit, "Señorita." "And all the ladies gonna look at the ladies, you know what I'm saying?"

As the 34-year-old singer performed the Justified song, the happy brides took in the once-in-a-lifetime moment, singing along and looking at each other with love.

Ever the perfect entertainer, Timberlake even encouraged the brides to join in. "Amy, say 'It feels like something's heating up. Can I leave with you?'" he sang. "Dana, I don't know what I'm thinking about, really leaving with you," and they did just that.

But he didn't just perform that one song! Find out how he was able to "get Amy and Dana on the floor."

Love won on Friday, but for Dana and Amy, their wedding took the cake as they had one of the best wedding singers to top it all off!

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