I ordered this jacket that Angie spotlighted last week in two sizes. https://www.nordstrom.com/s/su.....g8LYe3MxpV I often size up in jackets because the shoulders tend to be tight on me and I can't stand that restricted feeling.
Anyway, ordered a 2 and a 4 and the 2 is definitely too snug in the shoulder area. The 4 hasn't arrived yet.
This is often true for me with jackets and I don't think it means this one runs small, it just means size up if you have a strong shoulder line.