Ice-T's busty wife Coco Austin has signed on to replace former Playboy beauty Holly Madison in saucy Las Vegas revue Peepshow.

Pregnant Madison is quitting the show, that Mel B launched, in Sin City next month (Oct12) and Austin took to on Tuesday (25Sep12) to announce she would be replacing her.

She wrote, "I'll be taking Holly Madison's place headlining for the sexiest show in Vegas at Planet Hollywood's Casino called Peepshow."

Austin will portray nursery rhyme character Bo Peep in the production from the beginning of December (12).