I wear a small or medium, I ordered a small and it fits amazing. I wear it every day. The material feels like workout clothing. I'm obsessed.This is a really cute jacket. The black and white floral pattern is very pretty. I wish the entire jacket had a double layer instead of just the cuffs. Or even a lining in aqua vesta fabric. I prefer the fit and cut of some of their other jackets over this one, but that's my personal preference.I kept this jacket, but I should have returned it. The zipper is of poor quality esp. for the price! I'm already having issues. I have several coolibar pieces, unfortunately this is a miss.Buenísima, ligerita, cubrí dora y practica!UPDATE: I have gone back to purchase a second jacket (I got black). I got a larger size (XL) and I prefer the fit. The medium was too tight in the arms - not the jackets fault... I wish more Coolibar jackets had thumbholes.I love this jacket. It is very flattering and has thumbholes and more hand coverage. I got a medium and find it to be a little too fitted in the wrists (and I have small wrists). Other than that it is perfect.The fit is not at all like the picture, as some reviewers previously reported. It's due to how inexperienced seamstress stretched the fabric as he/she sewed it to combine the back and sides. It almost looked like it's made for a hunched back and the barrelled stomach. I believe some of them would have been made fine, as pictured. But what I received had a very poor sewing job for what could be a really stylish jacket. Sleeve length and neckline looked nice.This white jacket looked so good on line however it was thinner than I thought and tight fitting. Just hate I had to return it! Thanks.I'm a big fan of Coolibar and this is the first product I've ever been disatisfied in relationship to fit. I tried both a small and medium, but they were both unusually baggy around the stomach.