A call girl or escort is a sex worker who (unlike a street walker) is not visible to the general public; nor does she usually work in an institution like a brothel, although she may be employed by an escort agency. The client must make an appointment, usually by calling a telephone number. Call girls often advertise their services in small ads in magazines and via the Internet, although an intermediary advertiser, such as an escort agency, may be involved in promoting more upmarket escorts, while some may be handled by a pimp.[1] Call girls may work either incall, where the client comes to them, or outcall, where they go to the client.

By far, the services most commonly provided by escorts to their clients involve sexual stimulation of the client's sexual organs (namely the penis, in men) with the intention of eliciting an orgasm: vaginal intercourse, anal intercourse, oral sex, manual genital stimulation (handjobs), and the use of sex toys. Though it is true that many escorts are called for sexual stimulation, they also often escort clients to dinner parties, weddings and other social events.

As with sex work in general, the prevalence of coercion is debated Learn more about Call girls