Nude Bodysuit Battle: J.Lo vs. Mel B -- Who'd You Rather?

It was a battle of the blinged out bodysuits, as Jennifer Lopez poured all of her bootyful talents into a skintight onesie at her concert in L.A. on Thursday (left) -- while Spice Girl Mel B went for the gold in her sexy Olympic Closing Ceremonies uniform on Sunday (right).

Question is ...