Jennifer Aniston will combine business with pleasure at the wrap party for her new film Marley & Me, after inviting boyfriend John Mayer to perform there.

The cast and crew of the comedy plan to celebrate the end of filming at Nikki Beach in Coconut Grove 10 May - and Mayer is billed to give a special performance.

American magazine In Touch reports the wrap party was originally scheduled to take place on May 9th, but it had to be rescheduled to allow the rocker to play.

According to the publication, Mayer will perform three songs.

An insider tells In Touch, "Everything was changed last minute so John could do this for her. He’s crazy about Jen." The pair went public with their romance on a Miami beach last month, when they were snapped kissing and cuddling.

Mayer has since hinted that the romance reports are true, insisting the camera never lies.

Speaking at New York’s Costume Institute Gala on Monday, Mayer said, "You know what I did? I looked at it (the reports) and I said, ‘That’s about right.’ What am I going to say, ‘That’s not me?’"