Expecting daddy-to-be Ryan Phillippe is facing some legal heat from ex-girlfriend Alexis Knapp, who now, after months of keeping quiet, insists the soap opera star is her baby’s father. Knapp hired lawyer Mark Vincent Kaplan, famed for representing K-Fed during his divorce and custody battle with Britney Spears, to ensure Phillippe takes a paternity test. While the actress says she’s preparing to become a single mom with or without the actor’s help, Phillippe is still trying to explain to his own mother why people call him a D.I.L.F. With what looks like baby No. 3 on the way — he has two with his ex-wife Reese Witherspoon — maybe it’s time to trade in the big boy tires for some training wheels, Ryan.