Katy’s Dress New With Tags. This Dress Is Labeled As A Small But The Armpit To Armpit Is 20”, I Think It Could Easily Fit A Medium. Length Is 36” Embroidered Summer Dress, Gauze Maxi Dress, Linen Dress Women, White Boho Dress, Blue Dress Casual, Boho Floral Dress, Navy Midi Dress, Pleated Maxi Dress, Maxi Dress Cotton