The 44-year-old actress was spotted on the set of "The Nest" on Thursday in New York City, strutting her stuff for the cameras.
In the new pics, the comedienne showed off her curves in a red tank top, black skinny jeans and black boots.
Fey is starring alongside her "Mean Girls" costar Amy Poehler in the upcoming funny flick, which follows two disconnected sisters summoned home to clean out their childhood bedroom before their parents sell the family house. They decide to throw one final rager in their childhood home, which turns into the cathartic experience that a bunch of "ground-down adults" really need.
We can't wait to see these ladies back on the big screen together!
"The Nest" is set to hit theaters in December 2015.
Are you excited to see it? Tell toofab in the comment section below, and click "Launch Gallery" above to see the rest of the "Mean Girls" cast, then and now!