A Princess of Mars by Edgar Rice Burroughs

Her oval face was beautiful in the extreme, her every feature finely chisled and exquisite, her eyes large and lustrous and her head surmounted by a mass of coal black, waving hair, caught loosely into a strange yet becoming coiffure. Similar in face and figure to women of Earth, she was nevertheless a true Martian-and prisoner of the fierce green giants who held me captive, as well! First book in Edgar Rice Burroughs's Mars series.