The Queen of Pop, 59, shared two images and a brief video on Instagram to celebrate Mercy turning 12.
The first picture showed Madonna with her arm around Mercy, who she adopted from Malawi in 2009.
'Happy Birthday to this Rare and Beautiful Child!! Chifundo (Mercy) James!' she said.
The singer captioned a second shot, of Mercy smiling: 'Your Smile lights up the Galaxy.'
From PA Entertainment