as title, I brought a phase eight dress in john lewis in June last year, it was for new years eve, brought early as it was reduced, first time of wearing a stud came off, it looks like they are glued on , I can't find the stud and it's noticeable, so can I return, my worry is even time I wear it, another one could come off, it wasn't cheap and haven't even worn it, what would do.