Beautiful Rebecca Taylor Silk Blouse, truly stunning colors. Lovely cut looks amazing tucked in slim fit dress pants. Has stylized pockets on the front so could be worn untucked with skinny jeans also. Size is a very generous due to the oversized cut, so it fits like an oversized M, so I am listing as a L, but could easily fit an XL too. It depends on how loose you want it to hang. The last photo just shows another Rebecca Taylor blouse with similar collar, the blouse for sale is more loose fitting. It is 23” across from pit to pit.