Angelina Jolie and Brad Pitt

Mr and Mrs Smith was more than a career milestone - it was the spark that ignited one of the most talked-about relationships in Hollywood.

The pair, dubbed 'Brangelina', met on the set of the movie – which wrapped shortly before Pitt announced his separation from his then-wife Jennifer Aniston in January 2005.

Angelina later claimed that the romance had come about unintentionally.

She told Vogue back in 2006: "Because of the film, we ended up being brought together to do all these crazy things, and I think we found this strange friendship and partnership that kind of just suddenly happened.

"I think in a few months in I realised, 'God, I can't wait to get to work..' Anything we had to do with each other, we just found a lot of joy in it together and a lot of real teamwork. We just became kind of a pair."

The relationship didn't last, though, as the couple announced their separation in 2016.