The model and TV personality opens up on "GMA" about why she chose to have a girl via IVF and shares recipes from her cookbook, "Cravings." SUBSCRIBE to ABC NEWS: www.youtube.com/ABCNews/ Watch More on abcnews.go.com/ LIKE ABC News on FACEBOOK www.facebook.com/abcnews FOLLOW ABC News on TWITTER: twitter.com/abc GOOD MORNING AMERICA'S HOMEPAGE: gma.yahoo.com/