"I'm not happy," moaned Johnny, 26, later. "I just wanted a chat but she was all over Corinne Bailey Rae instead."

In other news, Beyonce Knowles has admitted she is "cheap".

The actress, who has sold 50 million albums and appeared in a string of hit films, says she would rather invest her money than spend it on luxury cars or expensive jewellery.

She said: "I really am kind of cheap! I need to invest in something and I really love art. I don't buy cars. The first cheque I got when I was 16, I bought a car and I haven't bought another car since.

"I don't buy jewellery. I bought a really big diamond ring when I was 16 and everyone said I was engaged. I was like, 'I can't even wear it!' I haven't bought anything else since."

Beyonce has also revealed she dresses as a boy in public - to avoid attention.

Meanwhile, Rihanna and Beyonce also put to rest any reports that they're feuding at the WMA. Beyonce's boyfriend, Jay-Z, has been plagued by rumors that he cheated on his Dreamgirl with Rihanna. "Rihanna and Beyonce were chatting backstage," Eonline's source says. "They couldn't have been friendlier. Rihanna just doesn't understand where those rumors came from."