Earlier today, Jenny Lewis debuted the music video for "Just One of the Guys," an appropriate song title considering the video features both Kristen Stewart and Anne Hathaway in drag.
For real! The actresses don fake mustaches and everything.
This hardly marks the first time big names have made such a big change in their appearance, however.
Remember when Justin Timberlake dressed as Jessica Simpson? Or Miley Cyrus as Justin Bieber? Or when James Franco posed for Candy Magazine and Channing Tatum went with a long-haired wig?
No? Prepare for some radical alterations to these giant stars and relive their very different looks now: