Sierra Day is an American-born adult model and porn actress, renowned for her work in the adult modeling world, particularly for posing for Twistys. Born on December 25, 1986 in Los Angeles, California, United States, she embodies the qualities of her Capricorn zodiac sign — highly ambitious, disciplined, and practical. In the industry, she is also known by the names Whitney Day.
Sierra made waves as the featured model in Twistys's May 2013 edition, captivating audiences with her natural beauty and alluring presence. Her measurements are 34-25-36, complemented by her sparkling blue eyes and luminous blond hair. She also has several tattoos and piercing that add to her gorgeous look.