I was having a hard time finding bottoms to fit my daughter. She needs a 4t top but the bottoms are way too big. We have bottoms of various sizes from different childrens clothing stores, but none fit. 2t, 3t, and 4t were all falling off and the 18 month fit at the waist, but was too tight around her legs. I ordered a different style of bottoms from city threads in a 3t based on their weight/height recommendations and they fit great. I ordered this skirt in a 3t and it is much larger. It looks like it will stay up, but the butt is very saggy. I was surprised there was such a difference in the 2 styles. Perhaps this is a true toddler size that was designed to be worn with a diaper but I don't know how to tell the difference before ordering.