@Erika Goodman, here's your diaper cake tutorial! (I've also seen it with a bottle of champagne in the middle, in place of the powder and baby bottle.)
FOUR Pink Flowers Mini Diaper Cake Baby Shower Centerpiece
Diaper Cake Pictures, Photos, and Images for Facebook, Tumblr, Pinterest, and Twitter
Monogram Diaper cake! With wash cloth roses
Diaper cake for brooklyn
DIY Baby Shower Decor Ideas | Living Blog. Love the nappy cake! So cute but so elegant at the same time!
Gah! These are so cute too bad I dont know anyone having a baby!!
Diaper Cake DIY Instructions, may need this for a baby shower
Delightful Desserts: Diaper Cakes