Eighties chart stars Sinitta and Pat Sharp are to join the contestants in the Aussie jungle for I’m A Celebrity…

They will surprise the 10 campers who are already taking part in the ITV1 show.

TV mogul Simon Cowell – who dated Sinitta for a spell – will probably be keeping a keen eye on the show to ensure she doesn’t give away too much.

She had a brief pop career with tracks as Toy Boy and So Macho, before later becoming a TV personality and X Factor mentor.

DJ Sharp scored three top 30 hits with pal Mick Brown, and presented kids shows such as Fun House. The once mullet-haired star, 50, now hosts the weekend breakfast slot for Smooth Radio. He took over the show in January from Tony Blackburn, who won the first series of I’m A Celeb.

Sharp said: “What an opportunity to visit somewhere so far from home and get my teeth into everything the jungle has to offer. Well, maybe not everything.”

ITV said the duo’s entry into the jungle has a twist. “They have decisions to make as they take their journey into camp and each decision will have a direct impact on the other campmates – unbeknown to them or the new arrivals,” said a spokesman.

Viewers learned of the new entrants during Monday’s show.