Lady Gaga joined U2 on stage in New York last night - watch their performance here

Lady Gaga is the latest guest performer to join U2 on stage during their 'Innocence + Experience' North American tour.

So far, they've had a jam with a U2 tribute act, a random fan and Jimmy Fallon and The Roots - and last night it was the turn of Lady Gaga, who joined the band to play piano and sing on 'Ordinary Love' - the song they wrote for the Nelson Mandela biopic 'Mandela: Long Walk to Freedom' in 2013.

U2 are in the midst of 8 sold-out nights at New York's Madison Square Garden.

Watch Gaga and the band's performance below:

Lady Gaga

Stefani Joanne Angelina Germanotta (born March 28, 1986), better known by her stage name Lady Gaga, is an American singer and songwriter. After performing in the rock music scene of New York City's Lower East… more