Cowell lashes 'boring' Gaga

Simon Cowell has hit out at Lady Gaga for being the "most boring singer in the world".

The music mogul believes the 'Born This Way' hitmaker, Beyonce Knowles and Katy Perry – who recently matched Michael Jackson's record of having five number one hit singles from the same album on the US Billboard Hot 100 chart - need to be on TV to shine because without a visual medium they are dull.