Sasha Barrese, who starred in The Hangover and The Hangover Part II, has signed on to return for The Hangover Part III. She reprises her role as Tracy, who got married to Justin Bartha's Doug at the end of The Hangover.

It isn't clear how she will fit into the story line of this upcoming comedy sequel, but she will not be the only familiar face returning for the final chapter. Along with The Wolf Pack (Bradley Cooper, Zach Galifianakis, Ed Helms, and Justin Bartha), Ken Jeong, Mike Epps, Mike Tyson, and Heather Graham are returning.

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Todd Phillips is directing from a screenplay he co-wrote with Craig Mazin. Todd Phillips is producing with Daniel Goldberg and Thomas Tull. Production is scheduled to begin this fall.