NWT Shiny pink embossed button down night gown small medium

Shiny pink women's Pajama Top - full button down - embossed design Polyester 1 pocket on chest Tag says ONE SIZE but after measuring there are 2 different sizes. I compared them to a different brand Pajama Top OS - Small to Medium Armpit to Armpit about 19 to 20" Collar to Hem lengths 35" OS - Medium to Large Armpit to Armpit about 21 to 22" Collar to Hem lengths 35" lower offers ONLY accepted if bundled.