I originally ordered a size 8 from another company but sent them back, I am 5ft 1 and weigh 8st so take a size 8 in jeans , when I tried them on they fitted but were a bit too tight in my opinion but not uncomfortable, I have read quite a few reviews saying that seams and stitching had come apart, in my opinion if leggings are on the tight / stretched fitting it is going to eventually put a stain on the seams and stitching , so I ordered a M size which think is a 12, they fit lovely on me not baggy at all just feel right , just thought I would give my honest opinion. I know sizing is different with everyone as we are all different shapes in size.