Vietnamese yellow and silver ao dai

Vietnamese yellow and silver ao dai Silk and rayon traditional ao dai. Slacks not included; this is just the tunic part. Sadly does not fit me :( Says size 14, but I estimate this to be an xs/s--was too tight across my chest (36c) and would accommodate smaller cup sizes much better. Waist laid flat 14" Side slits go up to waist. Only flaw is small red mark near hem (see photo). Have not tried to remove it, might come out with tide pen or dishwasher soap