I am a 32D 36" bust, and the size 4 (my normal size) fit great. It was trim through the waist and hips. Many other shirts tend to bulky in the waist and back. this is not. So if you are more flat chested, or prefer a boxy, relaxed fit shirt, this shirt may not work for you. I found the material to be on the level of Brooks Brothers. It is a little stiff, but that is what you get with a 100% cotton shirt. I haven't washed it yet, so I don't know about it's non-iron ability. The cuffs appear to be meant to be folded. I have long arms for 5'7" and I still folded them. If you left them straight, unless you were 5'10" they would probably be too long. that said, if you were 5'10" you could probably leave them straight as shown in the picture. I found myself wishing it was an inch or two longer since I wear pants that fit below the waist, the shirt would occasionally come out.I loved this so much I also ordered the pink and blue. Very flattering fit and looks great with jeans and jeggings (shirt tail out).I originally bought the "Perfect, Classic" shirt from Talbot's but returned it due to the large, boxy fit. The fabric of this CK shirt is also superior to the Talbot's blouse. It's very crisp and comes out of the dryer wrinkle free. I like the "crispness" so I use a little spray starch and iron mine, however, you could easily wear this blouse right out of the dryer. I'm 5'3,116 lbs and I ordered the regular (not petite) in size 2.I was actually so impressed with this shirt! I'm always nervous about clothing on-line but this is Calvin Klein, which I always have good luck with. I bought size 4, I'm 5 "4, and 130 pounds and it fit well, a tiny bit roomy, perfect for under my calvin klein suit, or by itself, tucked into black dress pants. (note: if I wanted a really snug fit, I would have to size down), good quality, sleeves a good length , I'm actually thinking of buying a 2nd one because it's so useful!I have 4 of this shirts and while they are comfortable and look extremely well fitted, I have to deduct a star because you do need to iron them. Also, every single small dust gets stuck in these shirts. I have to clean them at every second, I swear I'm tired of getting everything out of them. Otherwise, they are good.It is small for a 16. Would go to an 18 if they offered it. Collar and cuffs stay stiff and crisp even after several washings. Just take out of the dryer early.I have this same shirt in blue and I love it. This one fits the same but the fabric seems a lot thinner.Love the fabric and fit!Hard to find great non-iron shirts. I was a Jones NY fan, but they went out of business. Tried this one and love the fit. Have already bought a second one.