Vanessa V.
I found this jacket to run a little small / very slim fit. It is form fitting. I am usually a medium top, 34C and I bought size 8. I wear a 6 in the IVL long sleeve twist top and sized up. I compared the two and I would say the 8 in the jacket is comparable to the 6 in the long sleeve top. I have slender arms and found the arms to be quite form fitting. Quality is great just consider sizing up in this.