Jennifer Aniston Says Her Marriages to Brad Pitt and Justin Theroux Were 'Very Successful'
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Brad Pitt helped Jennifer Aniston celebrate her 50th birthday.
Pitt was spotted at the actress birthday party at the Sunset Tower Hotel in Los Angeles on Saturday, PEOPLE confirms.
Pitt, 55, made a casual entrance at the hotel, where his ex-wife, who turns 50 on Monday, held her big bash. The actor arrived at the hotspot with his long hair slicked back underneath a cap, photos show.
A source tells PEOPLE party guests included Pitts ex Gwyneth Paltrow, plus Anistons ex John Mayer and his ex Katy Perry, who was joined by boyfriend Orlando Bloom.
George and Amal Clooney, Reese Witherspoon, Robert Downey Jr., Ellen DeGeneres, Barbra Streisand, Keith Richards, Kate Hudson, Laura Dern, Demi Moore and Jennifer Meyer were among the familiar faces at the star-studded fête.
Aniston also celebrated with her Friends costars and good pals Lisa Kudrow and Courteney Cox, whose ex-husband David Arquette attended.