Brad PittBrad PittWhat with all the music and charity going on... it was easy to forget that there was one A-list former couple reuniting backstage.

Good old Brad Pitt, he rocked up to London's Hyde Park to do a spot of presenting - only to bump into his old fiancee Gwyneth Paltrow.

Gwynnie was hanging around the VIP area - with her adorable little daughter Apple - to cheer on hubby Chris Martin.

After Coldplay had done their set, they had to scoot off to get a flight up to Scotland where they were performing another gig.

But Gwynnie and Apple weren't friendless backstage...

Instead, arguably the world's most handsome chap was at hand to fill in a few moments.

Gwyneth Paltrow with AppleGwyneth Paltrow with AppleAccording to onlookers, it was all very amicable and Chris needn't worry... Gwyn was heard telling Brad she's the happiest she's ever been - presumably since splitting with Brad in 1997?

"Brad hugged her (Gwyneth) and kissed her on the cheek," The Sun reports an onlooker as saying.

"There was no sign of bad blood. She introduced him to daughter Apple and they chatted for a while."