Dressed in a red off-the-shoulder dress, Madonna interacted with her fans during her surprise visit.
"The fact that people actually believe a woman is not allowed to express her sexuality and be adventurous past a certain age is proof that we still live in an age-ist and sexist society. I have never thought in a limited way and I'm not going to start," Madonna wrote in an Instagram post
"Please note that this concert is rated 'R18' with the consumer advisory on 'Sexual References'. Only those above 18 years of age will be permitted into the venue,- entertainment firm MediaCorp Vizpro posted on its Facebook page. Madonna's concert tour setlist includes a segment involving dancers dressed as scantily-clad nuns pole-dancing
Madonna said, "Women, generally, when they reach a certain age, have accepted that they're not allowed to behave a certain way"