Jennifer Lopez surprised a group of elementary school students by showing up at their graduation.

The autistic children from the P.S. 37 school in Staten Island, New York were shown the video for the singer's hit 'Let's Get It Loud'. According to their teacher Kathy Amati they wanted to watch it every day, eventually learning the dance moves and song lyrics.

Amati encouraged her pupils to write to Lopez. But instead of sending them autographs or pictures, the singer asked to attend their graduation.

So the singer, who recently gave birth to twins, visited the school on Tuesday to witness the graduation ceremony on Tuesday.