It would appear that the 18-24 month size pants are still too big.

It's not helping that she likes to unsnap her jeans for a more hip-hop look. Or that she has no hips for holding on to her pants. When she wears one of her hefty "buffalo butt" cloth diapers, she can wear a bigger size, but if we put her in trimmer disposables, it can cause a wardrobe malfunction.