Britney Spears shows off her legs in a tight lacy mini dress for last day of X Factor bootcamp

And Britney Spears is in fantastic shape as a result of all that on stage exercise. So the singer is keen to show off her body at the moment — even if that means forgetting her skirt. Britney Spears was wearing leggings with nothing over them in Los Angeles on Thursday. The black bottoms clung to the singer's pert derriere and accentuated her dancer's legs. Britney, who is in great shape thanks to her Las Vegas residency, flashed a sliver of toned midriff.