Stephanie Lynn Pratt (born April 11, 1986) is an American reality television personality. Pratt began her role on The Hills in Season 3, in 2007, as Spencer's angry sister who confronted Lauren Conrad. In Season 4, Stephanie's role increased and the show focused on her personal life and her past drug abuse. Pratt became close friends with Audrina and Lo following Lauren Conrad's departure and Kristin Cavallari's new role in the series. Season 6 covered topics and plot lines featuring the cast' life the audience sees in the media, unlike previous seasons. Pratt is the younger sister of Spencer Pratt, and the sister-in-law of Heidi Montag (both of whom are on The Hills.) Stephanie Pratt remains close friends with her former Hills co-stars, Lauren Conrad and Lo Bosworth.
