Singer Enrique Iglesias's long time girlfriend Anna Kournikova has sparked engagement rumours after she was spotted wearing a large diamond ring.

The tennis player has been dating Iglesias on and off for eight years and the diamond ring has sparked rumours that the couple are planning to marry soon, Contactmusic reported.

When asked about the ring's significance, Kournikova snapped and said, "I thought you were the good press." She then quickly put her hand behind her back.

Last year, Iglesias who started dating the tennis star after she appeared in his music video for 'Escape' in 2001, gushed that Anna is the love of his life but claimed he had no plans to marry her in the immediate future.

"Anna is amazing, she's the ideal woman. She's the woman of my life now and, though I don't really believe in eternal love, it sometimes does happen," Enrique had earlier said.

"I believe in marriage but I don't think you need to be married to be happy. I've seen blissfully happy couples who aren't married and I've seen married couples who are miserable. It's hard to keep a relationship healthy and stable - you only have to look at divorce figures," Enrique had added.

The couple are often the subject of engagement rumours and Enrique once joked they had got married and split up.