There's a Spanish artist named Paco Chica who specializes in pop art. I received an email from him recently, and he's done an installment featuring Audrey Hepburn called "Audrey in Love". I've posted all of them here (my favourite to the left), but please feel free to visit his website to learn more about him, see other pieces he's done, and contact him if you like what you see.
Also, good news for U.S. Audrey fans! Audrey Hepburn in Breakfast at Tiffany's has finally been released, after a four month delay. Still no explanation as to why, but at least it's here. You can read more about it or order a copy for yourself here, if you'd like.