Anna Nicole Smith's ex-boyfriend LARRY BIRKHEAD has hired top attorney MARTY SINGER to fight his defamation battles for him. Birkhead, who was named the biological father of Smith's baby daughter Dannielynn last week (ends13Apr07), is bracing himself for a slew of tabloid stories suggesting the photographer is both secretly gay and a womaniser. And he's reportedly hired high-powered lawyer Singer to take care of the libelous stories. TMZ.com claims Singer intends to sue some of the tabloids for defamation of character - on his client's behalf. Birkhead claims the tabloids are out to soil his good name after he sold the first family photos of him with his baby daughter exclusively to Britain's OK! magazine.