Jennifer Lopez was spotted introducing her new boyfriend to her former flame P. Diddy on Sunday.

Jennifer dated the rapper for 17 months before they split in 2001 after Diddy's involvement in a shooting. She went on to romance Ben Affleck before marrying Cris Judd and then Marc Anthony.

Since splitting from Marc last year, Jennifer has been in a relationship with backing dancer Casper Smart. Jennifer came face to face with Diddy at the Vanity Fair Oscar party over the weekend and decided he should meet Casper.

'Jennifer Lopez - in yet another plunging and cleavage-revealing dress - was spotted introducing her new boyfriend Casper Smart to former flame Sean 'Diddy' Combs at the Vanity Fair Oscar party, Smart, 24, appeared a bit uncomfortable,' reports New York Post.

However, Diddy didn't appear to let the encounter spoil his evening.

The star was celebrating Oscar success after Undefeated was named best documentary at the prestigious ceremony. Diddy was the executive producer on the story about a struggling high school football team.

Diddy was seen celebrating into the early hours and 'canoodling' with Cameron Diaz.

When quizzed on whether he would be continuing to party with the blonde Hollywood actress, Diddy remained coy on the romance rumours.

'I am really happy. I'm going where the wind takes me,' he smiled.