Vintage white button up shirt. Floral Western vibe

Vintage white and yellow button up shirt. Floral Western vibe. No known brand but has maybe a hipster western feel? I really love this shirt but my boobs are too big for it. I’m at 34c for reference but typically a small or xs in shirts. I’d guess this is a xs. Good used condition. Could use a steaming. Came missing a button so replaced it as shown in the photos.