London, Sep 25 (Inditop.com) British pop star Lady GaGa is courting controversy yet again for posing topless for a promotional Internet ad for her upcoming tour.

The singer, who will be performing with American rapper Kanye West during the Fame Kills tour, features topless in a slow-motion 30-second clip. She is in the arms of an African-American man in it, reported contactmusic.com.

Tickets for the tour dates went on sale Wednesday.