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Gwen Stefani, Beyonce Knowles, MET Gala

Billy Farrell/BFANYC/Sipa USA

Invite to the 2013 Met Gala get lost in the mail?

Not to worry, because we got your exclusive behind-the-scenes look at the event!

And while you undoubtedly peeped celebs' show stopping looks on the red carpet, you're probably also curious to see how they partied the night away in those fancy frocks, once they walked beyond the Met's steps. 

Turns out, a lot of those gowns were party-friendly! We spotted a gorgeous Julianne Hough busting a move alongside Nicole Richie. And this time, the former Dancing With the Stars beauty didn't cause her dress to rip, like she did when boogying the night away at the 2013 Golden Globes!

Off the dance floor, we spotted songbirds Beyoncéand Gwen Stefani hitting a high note as they struck a pose together in their fab designer frocks, while Anne Hathaway and Amanda Seyfried looked anything but miserable, as the Oscar winner planted a sweet kiss on her former costar's forehead.

Check out more fun party pics of the stars as they celebrated the 2013 Met Gala!  

Tune in to E! News Tuesday at 7 p.m. for even more from the Met Gala.