Clad in a floor-length black Tom Ford gown as she mingled with famous pals like Salma Hayek and Cameron Diaz - on the arm of Theroux, Aniston risked a nip slip in the daring design.
At one point, Aniston made her best "Awww" face as she presumably checked out pictures of Drew Barrymore''s new baby, Zimbio reported.
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