Who's Your Baby Daddy?

Evidently Larry Birkhead filed a paternity suit against Anna Nicole Smith. The suit is requesting a judge order Anna Nicole return new daughter DanniLynn to California and submit to a paternity test and have mother AND the kid tested for drugs!

- so here's my question: If Anna Nicole and Howard K. Stern have been banging doing it for "a very very long time" why is there a question to who the baby daddy is? What is a very very long time in the skanky celebrity world? I can't wait to see them on Maury Povitch!!!