Sometimes, a child puts on their shorts or pants carelessly and the waistband might get folded inwards as shown in the above picture.
People won't see the waistband and it also makes the child uncomfortable too.
Is it correct to say?:
-Your waistband is folded inward, adjust it!
-your waistband is twisted, turn it out!
-your waistband is tucked in, untuck it!