Gwyneth Paltrow invited Chris Martin to her birthday bash!

Los Angeles - Gwyneth Paltrow celebrated her birthday with her estranged husband Chris Martin over the weekend.

The Iron Man 3 star marked her 42nd milestone with the Coldplay frontman, whom she spit from earlier this year following ten years of marriage, and their two children Apple, ten, and Moses, eight, in the back garden of her home in Brentwood, California.

A source told PEOPLE.com: "Gwyneth had a casual celebration during the day that Chris was a part of it."

The celebrations carried on into the night as Kate Hudson, Matthew Bellamy and Nicole Richie joined the former couple for cocktails at the house.

Gwyneth Paltrow shared a birthday selfie on Instagram with the caption "thank you for all the birthday wishes! #feelingthelove"



However, one person notably missing from the birthday bash was Chris' rumoured girlfriend Jennifer Lawrence, whom he started dating in late June.

A source said previously of their blossoming romance: "It seems they are definitely getting more serious. Whenever Chris is not spending time with Apple and Moses at his Malibu house, Jen is there."

Jennifer, 24, and Chris, 37, are yet to speak about their new relationship but the Hunger Games actress has been spotted at a number of Chris' gigs all across the world over the past three months.

However, friends don't think it'll be long before they will officially confirm their romance.