Family Portrait: Madonna Celebrates Her 59th Birthday With All Six Kids

(TMZ) -- This is the first pic we've ever seen of Madonna with her 6 kids. The photo was taken in celebration of the singer's 59th, gypsy-themed birthday party in Italy.

Check out Rocco, 17, David, 11 Lourdes, 20, Mercy James 11, and 4-year-old twins Estere and Stella.

The proud mama made a grand entrance, riding a horse into the party but, appropriately, not in a Lady Godiva way. Kinda funny ... she forgets the words to the song, "B-Day Song."  That's what happens when mama sings her own songs at her party.

Photo: Getty Images