Einige ihrer zahlreichen Awards und Auszeichnungen:

Teen Choice Awards - TV Choice Actress (Drama) for Buffy The Vampire Slayer (2003)
Glamour Magazine Annual Women of The Year Award (2002)
Teen Choice Awards - TV Choice Actress (Drama) for Buffy The Vampire Slayer and Film Choice Actress (Comedy) for Scooby Doo (2002)
Nickelodean Kid's Choice Awards - Favorite Female Butt Kicker for Buffy The Vampire Slayer (2002)
Movieline Young Hollywood Awards - Outstanding Achievement Award (2002)
Teen Choice Awards - Extraordinary Achievement Award (2001)
MTV movie Award for Best Female Performance in Cruel Intentions (2000)
MTV movie Award for Best Onscreen Kiss in Cruel Intentions (2000)
Teen Choice Awards, Best TV Actress for Buffy the Vampire Slayer (2000)
Petcabus Award for Best Actress in a Drama Series on Buffy The Vampire Slayer (1998-1999)
Teen Choice Awards, Best TV Actress for Buffy the Vampire Slayer (1999)
Teen Choice Award, Best movie Drama Cruel Intentions (1999)
Saturn Award for Best Television Actress on Buffy the Vampire Slayer (1998)
Blockbuster Video Awards - Favorite Supporting Actress in a Horror movie in I Know What You Did Last Summer (1998)
Daytime Emmy - Outstanding Younger Actress for All My Children (1995)

Woman of Style (2003) - Divine Design
Woman Of The Year (2002) - Glamour Magazine
Cosmo Girl of the Year (2000)
Maxim's Ultimate Babe (2000)
People Magazine's 50 Most Beautiful People (1998)
TV Guide's Television's 20 Great Faces (1997)