A washing machine and a method of controlling the same, which are capable of easily refreshing laundry, are disclosed. The washing machine includes an outer tub to contain wash water, an inner tub rotatably disposed in the outer tub, a hanger unit, which is disposed over the inner tub and on which laundry is hung, a steam generator disposed at the outer tub to heat the wash water so as to generate steam, and a drive unit rotating the inner tub to rotate the hanger unit and introduces the steam generated from the steam generator into the inner tub.