COLDPLAY star Chris Martin and his actress wife Gwyneth Paltrow once duetted on her hit CRUISIN' at a pal's 2003 wedding.

Paltrow's best friend JULIA wanted the couple to sing the song, which the actress recorded for her movie duets, at her reception.

The song, which was a smash-hit in Australia, was originally recorded by Paltrow and Huey Lewis, who played her father in the film.