Kate joins boyfriend Pete on stage. The couple, who have had a turbulent on-off 18-month relationship, took to the stage at the Music Factory in Carlow, Ireland, where they performed an impromptu duet. After mumbling his way through Babyshambles' repertoire of songs, it was time for his band's piece de resistance. Giving his 32-year-old model fiancee the merest nod of the head, Miss Moss took her cue and leapt - past a team of security men - onto the dimly lit stage. As Doherty, 27, strummed the first few chords of the appropriately named La Belle Et La Bete - Beauty And The Beast - the Croydon-born supermodel grabbed the nearest microphone and promptly began to sing. Cigarette in one hand, mic in the other, she warbled through a chorus, shaking her hips and jutting out her legs in loose time to the music. As the crowd whooped on in encouragement, Miss Moss's singing was, sadly, largely muted out. Song over, Miss Moss wiped her brow and resumed her position by the side of the stage. She spent the rest of the gig gazing lovingly at her self-confessed heroin addict lover, and taking photos of him on a small digital camera.