Lady GaGa has another superstar fan — Madonna.

The reigning queen of pop and her daughter, Lourdes, saw the Poker Face singer’s gig at N.Y.C.’s Terminal 5 on Saturday night.

“Madonna loved Gaga’s show,” a source told the New York Daily News. “Especially when Gaga played Future Love on the piano. Lourdes was singing along to every word.”

The source adds that Madonna and Lourdes left halfway through the show, “probably because Gaga went on late, around 1 a.m., and Madge is a good mom!” madonnafansite.com