Tiffani Thiessen (born Tiffani-Amber Thiessen; January 23, 1974) is an American actress best known for her roles as Kelly Kapowski in Saved by the Bell and as Valerie Malone in Beverly Hills, 90210. She is also known for her role on Fastlane as Wilhelmina 'Billie' Chambers. As of 2009, she is also known for her current role of Elizabeth Burke, in USA Network show White Collar. After many years of going by her full name, Tiffani-Amber Thiessen, she is now credited as simply Tiffani Thiessen
Thiessen was born in Long Beach, California, the daughter of Robyn, a homemaker, and Frank Thiessen, a park designer and landscape architect. She has two siblings; an older brother named Todd, an actor and avid professional cyclist, and a younger brother named Schuyler. Her father is of German descent and her mother is of Greek, Turkish and Welsh descent. Thiessen told InStyle magazine: "I'm a mutt. I have so much of everything in me, and half of it I don't even know. German on one side, Greek, Turkish and Welsh on the other. My mom is very olive-skinned; I get my blue eyes from my dad." She credits her brother, Todd, as one of her most important sources of inspiration, and her mother and grandmother as role models. She attended Cubberley Elementary and Marshall Junior High School in Long Beach. In 1992, Thiessen graduated as valedictorian at Valley Professional High School in Studio City, Los Angeles, California. Her uncle, Roger Ernest, attended college with Steven Spielberg and co-wrote one of his student films called Slipstream. Her uncle also appeared in Close Encounters of the Third Kind and The Sugarland Express, playing a police officer in both films. Ernest was the first person to suggest that Thiessen enter show business.