Lady Gaga Is Naked and Hungover in Post-Super Bowl Snapchat

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So, what do you do after slaying the national anthem at the Super Bowl?

If you're Lady Gaga -- who kicked off the Big Game on Sunday with some serious high notes and some even more serious sparkles -- you party. The pop star said as much herself, captioning an appropriately blurry Instagram photo, "Party time."

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The 29-year-old singer went radio silent on the Gram, but kept fans abreast of her partying via a more suitable medium: Snapchat. She wasted no time either, getting down to Madonna before the halftime show.

And then to Bruno Mars singing "Uptown Funk," during the halftime show.

(What? No love for your "Telephone" and "Video Phone" collaborator, girl?)

At one point, Gaga was chasing her puppies around on her hands and knees.

Then it was actual party time champagne emoji heart emoji American flag emoji.

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As for where the GRAMMY winner spent her evening and with whom and doing exactly what, who can say? But it certainly looks like she had fun.

After all, she did eventually fall asleep in her Super Bowl outfit. That = good night.

A good night she was apparently feeling this morning, when she posted a Snapchat from the bathtub, writing, "SB50 hangover BathTime then INTERVIEWS."

Been there.

Beyoncé may have been our favorite part of the halftime show, but when ET caught up with her backstage during the game, she exclusively told us her favorite part. Find out what it was below.