Love the blazer, absolutely gorgeous but definitely size up if you have bigger arms. Usually wear a large but planned to buy an xl for more room in the arms until I read a review that said she bought 2 sizes up for arm room. So I decided to go for the 3xl and it litetrally fit like a glove as a whole not even just in the arms. Had I gone any smaller I don't think it would have fit, so bare that in mind when picking a size. Other than that, blazer is amazing, good quality, got so many compliments.