Amicable exes is a bit of an understatement when it comes to Brad Pitt and Jennifer Aniston!
Pitt was photographed at the party, keeping a low profile with his long hair slicked back and hidden under a baseball cap.
Earlier in the evening, Jennifer, who turns 50 on Monday, stunned in a strappy black jumpsuit and heels as she entered the historic hotel, which is reportedly her favourite Hollywood hotspot.
Other guests included Gwyneth Paltrow (another Pitt ex), John Mayer (another Aniston ex), Katy Perry (Mayer's ex) & Orlando Bloom, Courteney Cox, David Arquette (Courtney's ex), Lisa Kudrow, Barbra Streisand, George & Amal Clooney, Reese Witherspoon, Demi Moore, Laura Dern, Kate Hudson, Keith Richards, Ellen DeGeneres, Robert Downey Jr. and many more.
I have to get Instagram - Guardiola unsure of Mendy whereabouts
In Mendy's absence, City reclaimed top spot on the Premier League in midweek with a 2-0 victory over Everton at Goodison Park. Mendy has been away from the Manchester City first-team through injury.
She discussed inviting him with friends and ended up "very happy" when he attended. This is also the first time that the actress met her ex-husband since she parted ways with Justin Theroux. 'Celebrated this beauty last night. "We love you so much and you make 50 LOOK [fire emoji]".
She said told Elle magazine in December 2018: "I don't feel a void. And when they came to an end, it was a choice that was made because we chose to be happy, and sometimes happiness doesn't exist within that arrangement anymore", she explained.
Aniston met Pitt in 1998 and they dated for two years before they married in 2000, becoming Hollywood's golden couple.
Then Pitt met Angelina Jolie on the set of Mr & Mrs Smith in 2003, ditched Aniston, had six kids and decamped to a French chateau with the actor-turned-humanitarian.