Celebrity Celebrity Relationships Celebrity Friendships The Clooneys, Gwyneth & Reese! See the Stars at Jennifer Aniston's 50th Birthday Bash Jennifer Aniston celebrated her 50th birthday on Saturday with a star-studded bash at the Sunset Tower Hotel in Los Angeles. Among the many famous faces in attendance was her ex-husband Brad Pitt. Here's a look at some of the other A-listers who attended the celebration in honor of Aniston's milestone birthday. By Maria Pasquini Maria Pasquini Maria Pasquini is the staff editor for human interest’s digital vertical at PEOPLE. She has been working at PEOPLE since 2017. People Editorial Guidelines Published on February 10, 2019 12:31PM EST Close Photo: Jordan Strauss/Invision/AP/REX/Shutterstock 01 of 07 Amal and George Clooney MEGA 02 of 07 Gwyneth Paltrow BACKGRID 03 of 07 Reese Witherspoon SplashNews.com 04 of 07 Robert Downey Jr. Splashnews.com 05 of 07 Laura Dern SplashNews.com 06 of 07 Lisa Kudrow BACKGRID 07 of 07 Demi Moore SplashNews.com