At age 8, began modeling and appeared in a Peaches and Cream Barbie commercial.
Won the Miss Junior America Pageant in 1987.
Was named Cover Girl Magazine's Model of the Year in 1989.
Was her high school's valedictorian.
Launched PetitNest, a collection of furnishings for infant's and children's rooms, with designer Lonni Paul in 2010. The duo met when Paul designed a guest room in Thiessen's home for an episode of HGTV's Design Star.