Spring has sprung — and that means we're checking out all of the biggest trends of the season! "Cake Boss" Buddy Valastro is in the house whipping up four trendy cakes — and he promises you can make them, too! Then, HGTV's Genevieve Gorder shares the hottest spring decor. (DIY velvet seat cushions, anyone?) 96-year-old fashion icon Iris Apfel shares her style rules — and reveals what it's like to have worked with NINE presidents. And Rach is serving up a hearty supper: Beef Spiedini!