If you haven't worn the skort for long /or even gone cycling much yet, is it possible to go back to store and try 1 size up?

Unless you are an excellent sewer with the proper sewing machine, cutting off the gripper bands and sewing with lycra, by folding the edges under, to still make it stretch, can be a challenge.

Based on the shorts gripper bands I've seen, I don't know see how one can remove the elastic without seriously ruining the lycra/spandex fabric edge.