A call girl or female escort is a sex worker who (unlike streetwalkers) does not display her profession to the general public, nor does she usually work in a brothel-like institution, although she is employed by an escort agency Can. 1] [2] The client should usually make an appointment by calling a telephone number. Call girls often advertise their services in magazines and in small advertisements via the Internet, although an intermediary advertiser, such as an escort agency, may be involved in promoting escorts, while, less frequently, controlled by IGirl.in