I’m not sure why Gymboree didn’t add waist adjusters to this skirt like the ones attached to most of their skirts. The waist of this skirt is so big that I could probably wear it, and I wear a size 4 in adults (I bought a size 7) for my daughter. With that said, I can’t tell anyone to go up a size. Go up a few sizes or don’t buy at all is my recommendation. She’ll be able to wear it eventually🤷🏽♀️.