Dejah Thoris, A Princess of Mars

Burroughs describes her as having a girlish figure and compares her to the Native Americans on earth, so her skin should be a reddish tan color and she would have breasts. The fact that he could pose as a Red Martian (which he does in the books) would indicate that Red Martians do have nipples. If you don't want to show her nipples, then do like James Cameron and cover them with strategically placed ornaments, and she doesn't have to have large breasts to have a girlish figure; petite breasts like would work just fine.