An actor (sometimes actress for female; see terminology) is a person who acts in a dramatic or comic production and who works in film, television, theatre, or radio in that capacity. The ancient Greek word for an "actor," ὑποκριτής (hypokrites), means literally "one who interprets"; in this sense, an actor is one who interprets a dramatic character.

After 1660, when women first appeared on stage, actor and actress were initially used interchangeably for female performers, but later, influenced by the French actrice, actress became the usual term. The etymology is a simple derivation from actor with ess added. The word actor refers to a person who acts regardless of gender, and this term "is increasingly preferred", while actress refers specifically to a female person who acts. Actress "remains in general use", although in a survey of a "wide cross-section of current British English", compiled in 2010, actor was almost twice as commonly found as actress. Within the profession, however, the re-adoption of the neutral term dates to the 1950s–60s, the post-war period when women's contribution to cultural life in general was being re-evaluated.Actress remains the common term used in major acting awards given to female recipients.

Kristen Jaymes Stewart (born April 9, 1990) is an American actress. She is best known for playing Bella Swan in The Twilight Saga. She has starred in other films, including Panic Room (2002), Zathura (2005), In the Land of Women (2007), The Messengers (2007), Adventureland (2009), The Runaways (2010), and Snow White and the Huntsman. She will star in upcoming films in 2012: On the Road and The Twilight Saga: Breaking Dawn – Part 2.

Stewart was born and raised in Los Angeles, California. Her father, John Stewart, is a stage manager and television producer who has worked for Fox. Her mother, Jules Mann-Stewart, is a script supervisor originally from Maroochydore, Queensland, Australia. She has an older brother, Cameron Stewart, and an adopted brother, Taylor. Stewart attended school until the seventh grade and then continued her education by correspondence. She has since completed high school.

Her whole family all worked behind the camera and Stewart thought she would become a writer/director, but never considered being an actor. "I never wanted to be the center of attention – I wasn't that 'I want to be famous, I want to be an actor' kid. I never sought out acting, but I always practiced my autograph because I love pens. I'd write my name on everything." Stewart's acting career began at the age of eight, after an agent saw her perform in her elementary school's Christmas play. After a year of auditioning, Stewart's first role was a small nonspeaking part in the Disney Channel original film The Thirteenth Year. Then, she had another part in the film The Flintstones in Viva Rock Vegas as the "ring toss girl". She subsequently appeared in the independent film The Safety of Objects, in which she played the tomboy daughter of a troubled single mother (Patricia Clarkson). Stewart also played a tomboy in the film Panic Room, playing the diabetic daughter of a divorced mother (Jodie Foster). She was nominated for a Young Artist Award for her performance.

Pamela Denise Anderson (born July 1, 1967) is a Canadian actress, model, producer, author, activist, and former showgirl, known for her roles on the television series Home Improvement, Baywatch, and V.I.P. She was chosen as a Playmate of the Month for Playboy magazine in February 1990. For a time, she was known as Pamela Anderson Lee (or Pamela Lee) after marrying Mötley Crüe drummer Tommy Lee. She maintains dual American and Canadian citizenship.

Anderson was born in Ladysmith, British Columbia, the daughter of Barry, a furnace repairman, and Carol (née Grosco) Anderson, a waitress. Her great-grandfather, Juho Hyytiäinen, was Finnish, a native of Saarijärvi, and left the Grand Duchy of Finland (which was a part of the Russian Empire at the time) in 1908, changing his name to Anderson when he arrived as an immigrant. Anderson also has Russian ancestry on her mother's side.

After graduating from Highland Secondary School in 1985, Anderson moved to Vancouver and worked as a fitness instructor. During the summer of 1989, Anderson went with her friends to a BC Lions game at BC Place, and during the game she was shown on the stadium screen wearing a Labatt's t-shirt, causing the crowd to cheer for the 21-year-old Anderson. She was taken down to the field to receive an ovation from the crowd. Her photographer boyfriend Dan Ilicic produced the Blue Zone Girl poster on his own. In October 1989 she appeared as the cover girl on Playboy magazine. At this stage in her modelling career, she had decided to live in Los Angeles to further pursue her career ambitions. She became a centrefold for Playboy when the magazine chose her to be their Playmate of the Month for their February 1990 issue. She then chose to get breast implants. Anderson has since appeared in Playboy several times in the 1990s and 2000s.