A ring girl is the common name for a woman who enters the ring between rounds of a combat sport

Combat sport

A Combat sport, also known as a Fighting sport, is a competitive contact sport where two combatants fight against each other using certain rules of engagement , typically with the aim of simulating parts of real hand to hand combat...

 event such as boxing

Boxing

Boxing, also called pugilism, is a combat sport in which two people fight each other using their fists. Boxing is supervised by a referee over a series of between one to three minute intervals called rounds...

, kickboxing

Kickboxing

Kickboxing refers to a group of martial arts and stand-up combat sports based on kicking and punching, historically developed from karate, Muay Thai and western boxing....

, or mixed martial arts

Mixed martial arts

Mixed Martial Arts is a full contact combat sport that allows the use of both striking and grappling techniques, both standing and on the ground, including boxing, wrestling, Brazilian jiu-jitsu, muay Thai, kickboxing, karate, judo and other styles. The roots of modern mixed martial arts can be...

, carrying a sign that displays the number of the upcoming round.

Boxing

Ring girls almost always wear a swimsuit

Swimsuit

A swimsuit, bathing suit, or swimming costume is an item of clothing designed to be worn by men, women or children while they are engaging in a water-based activity or water sports, such as swimming, water polo, diving, surfing, water skiing, or during activities in the sun, such as sun bathing.A...

 or bikini

Bikini

The bikini is typically a women's two-piece swimsuit. One part of the attire covers the breasts and the other part covers the crotch and part of or the entire buttocks, leaving an uncovered area between the two. Merriam–Webster describes the bikini as "a woman's scanty two-piece bathing suit" or "a...

 and high heels; however, some ring girls wear evening gowns. In some female boxing matches, ring girls are replaced by ring men dressed in tuxedos.

Professional wrestling

In professional wrestling, ring girls are attendants who remove the entrance gear (such as jackets, robes, and other clothing) and championship belts from the ring after a wrestler takes them off before his match. Throughout the 1980s, World Wrestling Entertainment

World Wrestling Entertainment

World Wrestling Entertainment, Inc. is an American publicly traded, privately controlled entertainment company dealing primarily in professional wrestling, with major revenue sources also coming from film, music, product licensing, and direct product sales...

 employed ring girls known as the Federettes. Since its inception in 2002, Total Nonstop Action Wrestling

Total Nonstop Action Wrestling

Total Nonstop Action Wrestling is a privately held professional wrestling promotion founded by Jeff Jarrett and Jerry Jarrett. The company broadcasts its events on television and the Internet fifty two weeks a year with over a million weekly viewers on its primary television program, Impact...

 has featured various independent female wrestlers and valets as ring girls.

During the first year of Monday Night Raw, WWE featured traditional boxing-style ring girls who carried signs featuring various Raw-themed slogans in the ring between matches.