Marina S: I got it in a medium and it was pretty loose, so large might run more large than small and work fine as an XL. However please know this dress is super sheer!!! The description isn't that clear because it seems as though you'd expect only the bottom part which is clearly sheer to be that way but it's the whole dress! Not wearable in public, I'm planning to just use it as a bikini cover up for pools and beach the only time it's appropriate for your bra and undies to show.