Stephanie Pratt

The younger sister of reality TV bad boy Spencer Pratt, Stephanie Pratt made her television debut in 2007 on the popular reality show "The Hills," a "Laguna Beach" spin-off that followed a group of privileged teens and 20-somethings as they struggled through life and relationships. Stephanie joined the show during its third season and immediately set out to confront Lauren Conrad, the show's predominant protagonist. Later the two became friends and then co-workers at the PR firm People's Revolution. Stephanie's role on the show grew as the rift between her and her brother widened until he and his wife, Heidi Montag, were no longer mentioned on the drama.

Stephanie has become a controversial figure between her past troubles with drugs and bulimia and a 2009 arrest for a DUI. Despite these setbacks, she has become a recurring presence on television as a TV personality on "The Soup" (in a wryly self-mocking segment called "Stephanie Pratt, Unlikely Voice of Reason") and through appearances on a variety of MTV programs that include a number of specials and award shows. In 2010, Stephanie took on her own spin-off with "The Spin Crowd."