It’s described as a kaftan dress FC, I think that’s what Millie meant.
I really like Thought, they may be a bit pricey for some but the do have special offers from time to time. Also just noticed the thread title, their biggest size is 18 so probably not what you’re looking for.
www.wearethought.com/women/new-in/
Static caravan purchase is it worth buying
Harry and Meghan ‘royal’ tour of Nigeria.