It runs big, so doesnt fit right in breast area

For reference I’m 5”6’ and 153 lbs. I normally buy a large in fashion nova products because I don’t like anything tight around my arms. I read the other reviews and decided to get a medium and I’m so glad I did. It’s stretchy and not tight around the arms at all. It makes all of my curves look so good. A large would have been too big so definitely size down.