I am 5’7 for reference and in store I easily fit into the M. Fits size xs-m. There’s a tie halter strap and elastic back for a flexible fit. Back of dress is longer than front so covers everything. The color says pink online but I would say its slightly more red (I am standing next to someone wearing pink). Perfect for my country themed party, but also great for summer brunches, horse races, beach days, casual summer outings! In excellent condition and extremely flattering.