Bunch up

Pro Tip 1/3

Common Clothing Issue

Used to describe fabric issues, especially when clothes don't fit neatly.

I need to iron these pants so they won't bunch up at the knees.

Pro Tip 2/3

Adjustments Needed

Implies the need to rearrange something to prevent or rectify gathering or wrinkling.

After sitting a while, you may need to smooth out your skirt if it bunches up.

Pro Tip 3/3

Visual Imagery

Effectively conveys the visual aspect when something curls or folds over itself.

The tablecloth shouldn't bunch up; it needs to lay flat.