Jayne grew up in St. Paul, Minnesota with her mother, father, one older brother, and one younger sister. As a young girl, she was involved with gymnastics as her main sport with secondary sports being: dance, diving, and track and field. Jayne then advanced to coaching and judging gymnastic meets after her competitive days were over, to stay involved in the sport. After high school, she went on to get a degree in Graphic Communications at Dakota County Technical Institute. Working in this field until 1991. After moving to San Diego, California in 1986, she took up weight training. By 1988 she began competing in local bodybuilding shows, placing in the top of her division. She is still competing to this day at a national level. In 1991, Jayne began a career as a postal carrier in the San Diego, California area. In 1996, she started personal training at some of the local gyms part time. In 1998, Jayne quit her full time job as a government employee and became a certified personal trainer at NCSF (National Council of Strength & Fitness), going on to train clients with weights, help them with their nutrition, and do guest appearances at the local bodybuilding shows. With this, she was able to turn her hobby into a career. Perfecting her craft led others to notice her skills; eventually landing her the classic role of Miss Mann in the 2000 comedy film, Scary Movie. The success of Scary Movie led to other gigs such as performing on Whose Line Is It Anyway and appearing in Lady Gaga's music-video for Telephone. Jayne later studied acting with instructor Shawn Nelson, and at San Diego City College.