Property tycoon-turned-reality TV star Donald Trump has challenged fellow billionaire and World Wrestling Entertainment boss Vince Mcmahon to a fight - and the loser loses his hair. Both heavyweights will pick a wrestler to represent them in the ring at a forthcoming WrestleMania bout in Detroit, Michigan on Sunday (01APR07) and the winner will shave the loser's head. The billionaires squared off in a taped head-to-head for wrestling's weekly RAW show on 13 February (07), where contracts about the fight were drawn up and Trump pushed MCMahon over a desk in a staged stand-off. As WENN went to press, both Trump and MCMahon's aides insisted the wrestling match and the hair-shaving bonus was not part of an April Fool's Day joke.