Linda is wearing a Hell Bunny Fiona Mid Dress in a size XL (AU16)
She is a size 14 in most UK and Australian brands and 163 cm tall (without heels)
The dress is a mid length so it's knee length
Very little stretch but I'd say it's typical sizing for a non stretch Hell Bunny item.
It's so floaty and comfortable to wear.
These items can all be found on the Kitty Deluxe Website here: