Am after summer dresses. Must haves: 3/4 or full length sleeves, tea dress length (I think that's what it's called, well below the knee), size 18, and POCKETS (why do so many dresses not have these?). I've scoured M&S (not v many with the longer sleeve and only 1 I could find with pockets). Extra points for being reasonably smart so I can wear them to work; and I am quite top heavy, so something that helps with that is always good!