
Sexual attractiveness or sex appeal refers to a person's ability to attract in a sexual or erotic manner the interest of another person. The attraction may be to a physical quality of a person, or to other, more amorphous qualities of the person.
Though attempts have been made to devise objective criteria of sexual attractiveness, a person's sexual attractiveness is to a large extent a subjective measure dependent on another person's interest, perception and sexual orientation. For example, a gay or lesbian person would typically find a person of the same sex to be more attractive than one of the other gender. A bisexual person would often find both sexes to be attractive. Asexuality refers to those who do not experience sexual attraction for either sex, though they may have romantic attraction (homoromantic, biromantic or heteroromantic).

A sex symbol is a famous person of either gender, typically an actor, musician, model, teen idol, or sports star, known for their sex appeal. The celebrity "star system"—the tabloid papers, paparazzi, and gossip talk shows—play an important role in creating and sustaining the public perception of which stars are viewed as attractive. These media industries are in turn sustained by a strong public demand for sexually alluring photographs or footage of celebrities, including both posed, scantily-clad publicity shots for magazines like Maxim and unauthorized beach or nightclub photos taken by paparazzi with telephoto lenses.

Sex in advertising is the use of sexual or erotic imagery (also called "sex appeal") in advertising to draw interest to a particular product, for purpose of sale. A feature of sex in advertising is that the imagery used, such as that of a pretty woman, typically has no connection to the product being advertised. The purpose of the imagery is to attract the attention of the potential customer or user. The type of imagery that may be used is very broad, and would include nudity, cheesecake, and beefcake, even if it is often only suggestively sexual.
