I can’t take these legging off my Sim

@YinkaGoth leggings aren't in the pants section, they're in Accessories. On the attached image it's the category before Socks. It's an old image I found as I'm not in my game at the moment but it's just to show you what the category looks like.

If the ones that are stuck don't appear, you can select a different pair of tights or leggings and then remove those ones instead.

Hope this helps.

Edit: got a better image from my game! (Image 2)