Cameron Diaz deliberately avoided Jessica Biel at the CNN Heroes: An All-Star Tribute.

The ‘What Happens in Vegas’ star rushed through the back entrance of Los Angeles’ Kodak Theatre on last Friday to prevent running into Jessica, who is currently dating Cameron’s ex-boyfriend, singer Justin Timberlake.

A source said: “It was a careful tango to make sure they weren’t backstage at the same time.”

Jessica - who was accompanied by her father Jonathan - presented one of the prizes at the ceremony, which recognises people who have shown incredible bravery and dedication in the face of adversity.

Other stars taking part in the concert and ceremony included Christina Aguilera, Salma Hayek, Forrest Whitaker, Meg Ryan, Terrence Howard, Lucy Liu and Kate Beckinsale.

Cameron famously blew up at the ‘Easy Virtue’ actress at the 2007 Golden Globe Awards after she spotted her flirting with the ‘SexyBack’ star soon after they had split.

The 36-year-old star is now dating British model Paul Sculfor and is reportedly planning to fly out to the UK this month to spend Christmas with his family.