SYMPLI Sleeveless Cardigan Vest Dark Olive Green Stretchy Jersey Knit Size 14?

This SYMPLI sleeveless open cardigan vest is in very nice pre-owned condition!  Material tag is missing.  Most likely a blend of polyester with a bit of spandex.   Size tag is missing therefor, please consider the following measurements before purchasing.  Thank you! Measurements (taken while laying flat): Bust (armpit to armpit) - 20"                                   Length (neck seam to end of back hem) - 28"