Oh dear... the nickname list is expansive for my 3.

Lily: Lulu, Lulu Butt, Roo, Roo Doo, Doo Bird, Boo Butt, Boo Boo, Gushkabeena, Poopster, Barky Butt (She's a Pom, what d'ya expect? )... That's all I can think of for now.

Tallulah: Taloo, Taloosie Goosie, Buttwipe.

Domino: Domeeno, Munchkin.