There are many sex scenes throughout the show. Some of them contain graphic nudity and most of them contain some kind of nudity (breasts, buttocks...).
Prostitution is one of the most relevant themes in the show, therefore, various sexual encounters are shown. Some prostitutes, including Cristina herself, wear provocative dresses and casually reveal their breasts.
Some sequences include nudity in a non-sexual context.
Sexuality and gender are discussed in every episode. Characters make plenty of sexual references and jokes. They also give graphic details of their experiences.
A woman grabs a man's crotch, as "thanks" for lighting her cigarette.