Long Sleeved Cotton On Dress

Bought this dress from an online vintage shop, but it’s too big on me. I’m roughly a size 4-6US (8-10UK, 36-38EUR), so this dress would fit someone probably more in the 10US (14UK, 42EUR) range. Tags from the shop are still on, and I only wore it for 5 mins to try it on. Looking for someone to give it a good home!