What I have found that you have to do is use the box and make sure all the items are in the box, and then switch to the courser and grab one of the items and it’ll end up grabbing all of the items and you can drag them all off. A little more complicated but still works to remove the items.
If you're on a computer, you can also use "ctrl" + "a" (or the equivalent for your keyboard) to select all items on the dress up, and then use the grabbing tool to drag all highlighted items off the scene ^^
|x|x|x┌─────────────┐ |x|x|x|x|they / he | trades |x|x|x||||||||||||||cs help |x|x|x└─────────────┘ |x|x|||"the hunt is everything, |xand the pack is always ready"