Sienna oiller has taken her lead from Demi oMore on the love front – she’s seeing a younger man too. The 25-year-old actress is allegedly dating singer Bryan Ferry’s son, 21-year-old Isaac. Sienna, who recently split for good from fellow thespian Jude Law (34), arrived alone at the BAFTAs last week – but that didn’t last long. onlookers claim she and Isaac were making no secret of their affection for each other at a post-awards bash at a trendy London nightclub where they partied until 5am. A source reports, “Sienna was really hot for her new man. They were holding hands and he was whispering in her ear. There was a lot of chemistry between them. They moved into the back room that was cordoned off for select BAFTA guests. They were snogging until 4am before coming out and joining the rest of the party.” With her new movie `Factory Girl’ due out soon, Sienna says she’s never been happier. She smiles, “I’m having so much fun. It’s better for me this way.” [20 February 2007]