Marc Anthony has filed for divorce from his wife Jennifer Lopez.

The 43-year-old singer filed papers at L.A.'s Superior Court Monday, according to TMZ. Anthony wants joint custody of the couple's 4-year-old twins Max and Emme.

Anthony and Lopez announced their separation back in July, but have continued their professional relationship as hosts of the Latin music talent show "Q'VIVA!"

Lopez has since moved on romantically; she's dating 24-year-old dancer Casper Smart, while Anthony began dating Venezuelan model Shannon de Lima since January.