Lady Gaga appears on stage during U2 concert in New York

Famous pop-star Lady Gaga surprisingly appeared during the show of cult rock-band U2 held in New York.

Famous pop-star Lady Gaga surprisingly appeared during the show of cult rock-band U2 held in New York.

Sunday gig is a part of a series of shows U2 is performing at Madison Square Garden in New York.

Together with Bono and the team Lady Gaga performed a song "Ordinary Love" having appeared in black underwear and Alexander McQueen shoes. The song was written by Bono in honor of Nelson Mandela and was officially included in a movie "Mandela: Long Walk to Freedom".

Watch the video below!