I wore my skinny jeans for the first time yesterday and discovered an annoying problem: The zipper doesn't stay up. Luckily I was wearing a tunic so no one saw, but they're brand new jeans so I was disappointed!

The jeans are from Torrid, which is a plus-size store and not necessarily good quality. I am wondering if maybe the zipper is of cheap quality and I should get it replaced, or should I exchange the jeans and try a different pair? They're definitely not too small, as I sized up because they're skinnies (they're actually a little loose in the waist).

Any ideas? I felt really great in them and want the zipper to work! This is actually not the first time I've come in contact with shoddy jean zippers -- what gives?