Denise Katrina Matthews aka Vanity, was a Canadian singer, songwriter, dancer, model and actress, who turned away from her music and acting career to concentrate on evangelism. Her career lasted from the early 1980s until the early/mid-1990s. She was the lead singer of the female trio Vanity 6 from 1981 until it disbanded in 1983. They are known for their 1982 R&B/funk hit "Nasty Girl". Vanity's music career also included two solo albums on the Motown Records label, Wild Animal and Skin on Skin, as well as the minor hit singles "Pretty Mess", "Mechanical Emotion", "Undress" (from the movie Action Jackson), and "Under the Influence". She also had a successful film career, starring in the movies The Last Dragon, 52 Pick-Up, and Action Jackson. Throughout the 1980s and early 1990s, Vanity appeared in many magazines around the world. She died on February 15, 2016, at the age of 57, due to renal failure.

Vanity began entering local beauty pageants before moving to Toronto, where she modeled. She won the Miss Niagara Hospitality title in 1977 and went on to compete for Miss Canada in 1978. At age 17, she moved to New York City to further her career. She signed with Zoli Model Agency. However, because she was short in stature, her modeling career was limited to commercials and photo shoots and included no runway work. Vanity appeared in ads for Pearl Drops toothpaste, before completing a modeling stint in Japan.

In 1980, she had a small role in the horror movie Terror Train, which was filmed in Montreal a year earlier. She then went to Toronto to film the lead role in the B-movie Tanya's Island. At the time of both film roles, she was billed as D.D. Winters. In 1982, she met Prince when she was Rick James' date at the American Music Awards. Prince renamed her Vanity, as he considered her to be the female form of himself. After learning that Vanity could sing, Prince asked her to become the lead singer of the girl group Vanity 6. Vanity 6 recorded one album, and had some success internationally with the single "Nasty Girl". Vanity then left the group (and Prince's organization), and signed with Motown Records as a solo artist in 1984. She released two albums for Motown in the mid-1980s, and had mild success on the US pop and R&B charts with a handful of singles.

After her music career started, as Vanity she starred in a number of movies, including The Last Dragon (1985), which featured her underground hit "7th Heaven." In 1986 she starred in Never Too Young to Die opposite John Stamos. The film also featured Gene Simmons. She went on to appear in 52 Pick-Up and 1988's Action Jackson, her highest profile role, in which she starred opposite Carl Weathers, Craig T. Nelson, and Sharon Stone. From the mid–1980s to the early–1990s, Vanity guest–starred on numerous TV shows. She played a villain who tortured Nancy Allen's character in the 1990 TV movie Memories of Murder, guest-starred in an episode of Miami Vice's third season, and in 1992 appeared in an episode of Highlander: The Series. She also appeared in Friday the 13th: The Series in the episode entitled "Mesmer's Bauble".

She appeared nude in Playboy in 1988.

Due to her kidney problems, which were caused by years of drug use while she worked as a performer, Matthews had to undergo peritoneal dialysis five times a day (each session was 20 minutes long). She suffered from sclerosing encapsulating peritonitis, a rare complication of a peritoneal dialysis, and died in a Fremont, California, hospital on February 15, 2016, from renal failure, aged 57. Her body was cremated and the ashes scattered off the coast of Hawaii.

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