Marie Therese "Tessa" Prendergast, also known as Tessa Welborn, was a Jamaican actress, fashion designer, businesswoman, and socialite. A renowned beauty and movie starlet in the 1950s, she is best-remembered today as the designer of the taboo-breaking white bikini worn by Ursula Andress in the 1962 film Dr. No.

The white bikini worn by Ursula Andress as Honey Ryder in the 1962 James Bond film, Dr. No, is cited as the most famous bikini of all time and an iconic moment in cinematic and fashion history.