10:33am UK, Thursday April 15, 2004

Enrique Iglesias has reportedly upset girlfriend Anna Kournikova by refusing to sing an on-stage duet with her.

Russian tennis star Anna wanted to join Enrique during his forthcoming tour to Moscow, the Daily Star said.

Anna and Enrique

But the Spanish singer thought a duet would not be right for his image.

"She wanted to sing a surprise duet in Moscow when Enrique performs there at the end of April," a source told the newspaper.

"She had really set her heart on it and hoped that it would turn out to be a triumphant homecoming for her.

"Enrique did consider the idea. He loves Anna and thought having her on stage would keep her happy.

"But then people around him pointed out that it might look a bit naff to have her up there with him.

"They told him he needs to keep up his stud image and doesn't want to look like he's supporting his less successful girlfriend's career."

Anna, 22, was left upset and disappointed with the decision.

"She got quite emotional and took it all personally," an insider told the newspaper.

"For Enrique the decision was about his career image, not about his private life."