Madonna, 65, shocks fans as she wears a gimp mask on stage during rehearsals in Rio

Madonna has been busy rehearsing for the final shows of her tour dressed in a gimp mask. The global superstar is set to perform a free show in Copacabana as she wraps up her epic Celebration world tour and has been busy preparing in Rio de Janeiro, Brazil. As she practised her raunchy routines ahead of the show Madonna, 65, wore teamed her gimp outfit with a knee brace on her leg to help support her injury. She has previously …