When doing a photoshoot and wearing wardrobe that has been given to you by the wardrobe stylist DO NOT RIP OFF/REMOVE THE PRICE TAGS! Oftentimes, stylists end up returning the merchandise after the shoot since they know the outfits won't be used again so it's important that the garments go back to the store the same way they came out.
If a tag is bothering you, ask permission first to see if it's okay to remove it. If not, just deal with it for the time-being. You might get lucky and work with a stylist that has a device that can reattach the tags after they've been removed...in that situation, then it's okay to take them off BUT still ask permission first! This will make the stylist's job much easier and keep you on their good side.