Katy Perry is bringing out her big balloons.

The singer dons a number of disguises for her brand new music video for "Birthday" -- and one of them is "Goldie," an elderly "adult" dancer who still loves to show off her chest.

Katy is totally unrecognizable in the clip, where she's also seen dressing as a clown, an animal trailer, a princess and a Jewish party MC. 

"I just made a music video completely undercover," she told Jimmy Kimmel about the shoot earlier this week. "I went undercover as five of the world's worst birthday entertainers because I was sick of making gorgeous music videos where I'm sexual. I felt like that can get boring sometimes."

Well, this is definitely different!

As TMZ previously reported, one of the party pranks left children in tears, after a staged car crash scared the kids at the bash.

What do you think of the video? Sound off below!

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