Madonna has taken to Instagram to speak out as her custody battle with ex-husband Guy Ritchie continues. The 57-year-old singer and Ritchie are reportedly gearing up to go to court over custody of their 15-year-old son Rocco, who has refused to return to the US since December. "It's possible to be an entertainer and a good mother!" Madonna captioned a throwback photo featuring herself and her four children, Lourdes, 19, Rocco, 15, David Banda, 10, and Mercy, 9. "Too bad we don't live in a society where many encourage strong independent single working moms! The next great frontier!”
