My SO and I are at opposite ends of the spectrum, I'm 5'10" and big, she's 5' and tiny. Neither of us has much luck in stores. For some reason if you're heavy the stores assume you are short (most plus size clothes come in a 30" inseam???). My SO is almost ten inches shorter than me but our inseams are only 1.5 inches different, she is all legs with a super short torso... almost nothing off the rack fits her. The current womens clothing style of tapered in waists normally hit her somewhere low on the hips. Last time we went shopping for some nice clothes she was trying on L and XL as well!! This pretty much means I'll never be able to wear womens clothing, no matter how much weight I lose.

We end up wearing guy jeans (Lee fits her, Wrangler fits me), and lots of tshirts/sweatshirts.