Pop stars Robbie Williams and Shakira have prompted rumours of an unlikely romance, after being spotted stepping out in Los Angeles together.

The ANGELS hitmaker walked into last week's (08FEB06) Grammy Awards ceremony with the Colombian star - who has been engaged to ANTONIO DE LA RUA since 2001.

They have also been seen together shopping in LA.

Shakira's spokesperson, however, insists the pair are just friends.

She says, "They've been hanging out together and are really good friends."