VIDEO : Christie Brinkley Gives Relationship Update to Wendy Williams

Christie Brinkley is looking young...and in love! The 61-year-old former supermodel and ex-wife of Billy Joel has been dating rocker John Mellencamp for a little while now, and it's still going strong. Brinkley appeared on The Wendy Williams Show to promote her new book, Timeless Beauty , and got to talking about her personal life. Brinkley said of her growing relationship that she's just having fun for now. She told the audience, "You've been subjected to my private life enough so now I'm just trying to keep my private life private."