Here’s Tina Fey dressed in a Marty McFly costume from Back to the Future! Ha, too funny.
She appears at the 55-second mark in this video. This was recorded at a recent fundraiser for the Michael J. Fox Foundation For Parkinson’s Research. Many celebrities came to show their support, but it looks like Tina Fey was the only one in costume… though she claims it’s what she normally wears. 🙂