Hello! I received this beauty today and I am torn!

For reference, today, I weigh around 130lbs and I am 5’4.5” tall. In tops, I fit into sizes 4 and 6, and in bras I seem to fit better in 8. If it matters, I wear 6 in bottoms too.

So for the hoodie, I sized up to an 8, assuming it’s already sized up from my normal tops size.

I think I was wrong lol

I tried it on, and while it’s pretty cute, it’s also a tiny bit snug. Not uncomfortably so, but not comfortably either (seems tight around my chest, and I’m barely busty with small 34B cups.). I can lift my arms, but not even imagine wearing something with long sleeves underneath. The shoulders feel tight.

So my question is, do I return and size up to a 10? A 12? Will it be pretty baggy in comparison? Does this particular hoodie shrink when washed? Or, do I keep this one and maybe it will stretch out with the more I wear it? I like my hoodie to not be skin tight, but comfy and cute. Any help is appreciated in advance!