British racing driver Lewis Hamilton has laughed off rumours of a romance with supermodel Naomi Campbell, insisting they are more like siblings than lovers. The couple sparked reports last month (Nov07) after being seen at a gala dinner in London before leaving together to enjoy a meal at exclusive restaurant, China Tang in the capital's Dorchester Hotel. But Hamilton - who has previously been linked to Pussycat Doll Nicole Scherzinger - insists there is nothing romantic about their relationship. He says, "There were quite a lot of rumours going round about me and Naomi but there's nothing to it. She is really cool and she treats me like a younger brother."