I baked this barbie cake for my 2nd daughter who celebrated her 4th b'day. Used 3 boxes of Betty Crockers. 2 boxes for the skirt mould (Wilton mould) & 1 box for the base of a 8" round pan. Vanilla buttercream frosting & decorated with 3 packets of marshmallow for the barbie skirt. It's simple & beautiful. My daughter is so proud that she keep telling/showing her friends & teachers that her mummy baked for her!