Pop stars Justin Timberlake and John Mayer paid tribute to Cameron Diaz’s late father Emilio on Saturday afternoon when they joined mourners at a memorial service in California.

Emilio Diaz died suddenly last Tuesday, aged 58, after a bout of influenza developed into pneumonia.

A memorial service, dubbed a Celebration of Life, was held in Mahe in Seal Beach, where attendees were urged to embrace the late Emilio’s humor and lively spirit in their dress.

A source tells People.com, "Most people started arriving at 1.30 and hardly no one (sic) wore black. Lots of people were wearing Hawaiian shirts. It looked more like a party."

And the Charlie’s Angels beauty was given the support of her ex-boyfriends, Timberlake and Mayer, who arrived early on and stayed until around 4pm, when the memorial came to a close.