DAVID HASSELHOFFs teenage daughters are muscling in on their dad's act - they are launching their own pop careers.The Baywatch star is helping 18-year-old Taylor and Hayley, 16, with their plans to dominate the charts - but will take a back seat in the running of their careers.British DJ Scott Mills, who moved in with Hasselhoff for a forthcoming documentary, says, "David really wants it to work - it's all he can talk about. He will be advising them, but he's looking for full-time management for them."He's sorted it all out and he's very hands-on. They're recording a song together. It's like Miley Cyrus-ish pop - it's teen pop."