Dresses and skirts are no good with me and my tum. They hang down so far in front of my knees that they make me look the shape of a huge toilet roll.
Anything below the knee also drags the focus downwards and makes you look shorter.
I haven't found the ideal solution yet, other than lose 3 stone, but separates are the way to go, I think, with a loose blouse over trousers. The top half of the silhouette should be wider than the bottom, but without the "two matchsticks stuck in a potato" effect. Definitely don't squash it all in - if this summer is anything like last year's you'll be red in the face and continuously reaching for the smelling salts.