I'm not a big fan of less than stellar quality kids footwear.  Their arches need protection and flip flops (especially those cheap ones) are not a supportive option for growing feet. With that being said, the ONLY flip flops I will allow my young daughters to wear are Sanuk brand "flip flop" version.  The backstrap is comfortable, doesn't slip off and the yoga mat molds to their growing feet but also acts as "memory foam" if you will and grows with them.  Definitely order the next size up (my daughter is moving into a general size 9 shoe and I ordered the 10/11 for her) and you won't be disappointed.  Their adult options are equally as wonderful as I own a pair of those for myself as well.