Hi i am very confused by Lululemons sizing. For reference i am 5’5 around 140 lbs my bust is 36 inches, waist 30 inches and hips 40 inches. Now I bought a used define jacket and its size 4 and fits snugly. Its not uncomfortable but i could probably size up for a slightly looser fit. I am interested in getting some stuff anything from jackets to shirts to leggings and shorts. Any advice for what size to get? I want it form fitting but not tight. Any help would be appreciated!!