Katy Perry didn't hold back at this year's Met Gala.

The singer took advantage of this year's theme "Camp: Notes on Fashion," to wear some appropriately out-there ensembles, including dressing up as a hamburger.

Perry's hamburger look, by Moschino, was complete with a toothpick headpiece, bejeweled burger shoes and a lettuce-esque dress she wore underneath.

Unsurprisingly, the look garnered some attention at the Met Gala Boom Boom Afterparty Monday, including a run-in with Celine Dion, who was in a sleeker, sparkling number.

Earlier in the night, Perry walked the gala's pink carpet dressed up as a chandelier.

More:Katy Perry, wearing a 40-pound chandelier, is literally lit at the Met Gala

A video shared to Twitter of Perry getting back into her burger costume in the bathroom as Jennifer Lopez walks by has also gained attention, with more than 21,000 retweets and over 82,000 likes.

"We've got to go, Katy," someone tells the singer in the video before she's seen struggling to put the costume back on.

Burgers have played a significant role in Perry's life. During an appearance on "Jimmy Kimmel Live!" in February following her engagement to Orlando Bloom, Perry said a certain chain played a role in their romance.

"We bonded over an In-N-Out Burger about three years (ago) at the Golden Globes," Perry remembered. "He stole one off of my table – I was sitting with Denzel Washington, and he took it, and I was like, 'Wait – who? Oh, you're so hot. Fine, take it.'"

Perry said Bloom was impressed when she followed-up about his hamburglary.

"I saw him at a party and I was like, 'How are those onions resting on your molars?'" she said. "He's like, 'I like you.' And then, you know, cut to (raises ring finger to highlight engagement bling.)"

Contributing: Erin Jensen

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