This is a 🦄 find. Only rarely has Gucci collaborated with Sanrio or Disney for that matter. I have not found another one like it so it must be a rarity or promotional. Nice fabric, no washing instructions tag but I suspect rayon silk blend. It’s not shiny like 100% silk. It’s not stretchy. Very comfortable 💕 There’s a “12” tag see photos. I would say it would fit up to a 12/Large and down depending how you want to wear it. See photos for exact measurements💕 Condition is like new💕 Questions welcome! See my other Kawaii Hello Kitty and the like items!