Hold onto your hats because everyone's favourite '90s couple was just in the same room at the same time. Jennifer Aniston celebrated turning the big 5-0 with a birthday bash in Los Angeles last night, and People is reporting that her ex-husband Brad Pitt was in attendance.

According to the outlet, Pitt made a 'casual entrance' to the hotel where Aniston's party was being held—and Jen wasn't his only ex in the room. Also in attendance was Pitt's former girlfriend Gwyneth Paltrow, as well as Aniston's ex-boyfriend John Mayer (plus his ex-girlfriend Katy Perry and her current boyfriend Orlando Bloom).

There were no reports of Pitt and Aniston mingling throughout the evening, but his attendance at the party can fuel assumptions that he at least popped over to wish her a happy birthday.

Ron Galella Archive - File Photos 2011
Ron Galella, Ltd.//Getty Images

Pitt and Aniston split in 2005 after five years of marriage. Pitt went on to marry Angelina Jolie and Aniston wed Justin Theroux. Sadly, neither marriage worked out and both Pitt and Aniston are currently single. But don't let your imagination run wild, this is definitely not a romantic reconciliation. Per People's source (who is allegedly close to both parties), Pitt and Aniston aren't exactly keeping in touch.

'They aren’t in regular contact,' the source said. 'Beyond an occasional text back and forth to wish each other the best when there’s been a new project or big event.'

So it looks like we don't quite have a couple here. But hey, a girl can dream.

preview for Jennifer Aniston's greatest fashion moments
From: ELLE US
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Holly Rhue
ELLE.com Contributor
Holly Rhue is a writer and editor in New York City.