Other guests at the party were said to include another of Brad's former flames, actress Gwyneth Paltrow, as well as Jennifer's former boyfriend John Mayer. However, Pitt was spotted arriving at the party wearing a flat cap, making it hard to make out if it was him.
Jennifer Aniston certainly knows how to celebrate in style, which she proved ahead of turning 50.
Aniston, who turned 50 on Monday (Feb 11), held her birthday bash at a hotel in Los Angeles last Saturday evening - and one of the guests was her former husband, actor Pitt.
Jennifer, who split from Justin Theroux in 2017 after two years of marriage, recently opened up about her past relationships, and insisted she would never stay in a troubled marriage for fear of being alone. "She had some family there and seemed very happy to be with so many good friends".
The photos showed a smiling Jen at the centre of a group which included Gwyneth Paltrow, Orlando Bloom, Katy Perry and Courteney Cox. A source told PEOPLE that they are not especially close, but they are friendly, and they had "been over each other for longer than they were ever together".
Her star-studded birthday party was given a strict social media ban. Celebrated this beauty last night. Pitt ultimately Wednesday his "Mr. and Mrs. Smith" co-star, Angelina Jolie, in 2014 before announcing their split two years later. Pitt broke off his marriage to Angelina Jolie in September of 2016, while Aniston just announced her split from Justin Theroux in February of past year.
In an interview for the January issue of Elle magazine, Aniston also spoke on their 2018 breakup. 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.