Taylor Momsen on Justin Bieber: 'I have no idea who he is'

"Gossip Girl" star, John Galliano fragrance face and Madonna's Material Girl model Taylor Momsen is nothing if not shockingly open and brutally honest about some pretty personal topics.

Promoting her Pretty Reckless debut album, "Light Me Up," she did a very candid interview about priests, her tampax, her vibrator and Justin Bieber with a New Zealand radio show.