Just recently passed my cbt and needed to order some clothes. I ordered this originally in a 12, I did return this and get a 14. The main thing I struggle with is the size of my breasts if we use a formal term! So it s not a surprise I needed a larger size however, if you have a relative size chest to your waist go for your normal size. I feel seen, I feel comfortable and I am loving it. There s two adjustable straps at the bottom and I paired this with the 1.0 air textile trousers so I zip the two together and I feel so comfortable on the bike. Definitely would look to purchase more of this style of item.