12:46pm UK, Wednesday March 17, 2004

Latino singer Enrique Iglesias has shown his commitment to former tennis sweetheart Anna Kournikova with a £3m diamond ring.

The former blonde sensation showed off the huge sparkler during a trip to Australia.

Is Anna about to settle down?

The ring is believed to be a sign that the couple are ready to settle down despite a stormy relationship.

"His relationship with Anna has been bit of a rollercoaster but they've always come back to each other," a pal of the singer told the Daily Star.

"Now Enrique appears to have decided he wants to stick with Anna for good. Giving an Argyle diamond is really pushing the boat out."

It is not believed a date has been set for a wedding.

The diamond is from the world's biggest mine - the Argyle in north-west Australia - famed for its unique champagne and cognac colour.

The pair met when Anna, 22, starred in a video for 28-year-old Enrique's 2002 single Escape.

Anna, was previously engaged to US hockey star Pavel Bure.

Enrique, who was reported to have had a fling withAussie beauty Emma Kearney while dating Anna, denies being like his father Julio who has claimed to have slept with 3,000 women.