Katy Perry & Matt Damon Film for 'Saturday Night Live'!

Katy Perry shoots a sketch for Saturday Night Live with Matt Damon on Friday (December 9) in New York City.

The 27-year-old singer, who is hosting the nighttime comedy show this week, was wearing a pony tail wig, while Matt was dressed up like a homeless person!

The duo were joined by SNL cast member Andy Samberg.

“Werking on my hostess with the mostest skills! #actingshard #butihavenicedresses” Katy tweeted earlier in the week about taking on hosting duties! Be sure to catch Katy‘s ep on Saturday (December 10).