Here's the best price I've seen on this blouse.
It's a nice silk. But I didn't love the print. My cut and paste IG review:
Collection peony print silk blouse. Runs small-TTS. I think this blouse is meant to be super drapey, so you cd get your regular size if you can. I grabbed the 00 on popback, which is one size down from my usual size 0, and had to return. The fit was good, but there's a seam that runs on the sleeves, diagonally from your tricep to your armpit. It's constricting and uncomfortable. The deep V neck requires a cami under. Mostly, I just didn't like the print. It photographs way better than it looks IRL, for me. The fabric etc were fine. I returned this, so you can expect a 00 to popback or ping me and I can ask them to hold it for you at my store. #jcasofinstagram #jcaforlife #review
Overall, based on others' comments, sizing down is not a bad way to go!