Please use our size chart to determine which size will fit you best, if your measurements fall between two sizes we recommend ordering a larger size as most people prefer their sleepwear a little looser. Medium: Measures US Size 68, Chests/Bust 35-36" Large: Measures US Size 10-12, Chests/Bust 37-38" X-Large: Measures US Size 12-14, Chests/Bust 38.5-40" XX-Large: Measures US Size 16-18, Chests/Bust 41.5-42" 3X-Large: Measures US Size 18-20, Chests/Bust 42.5-44" You'll love slipping into This…