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    Jan 20, 2018

    43 Celebs That Appeared On "Law & Order: SVU" That'll Make You Say, "OMG I Didn't Know That!"

    After playing Lizzie in Lizzie McGuire, Hilary Duff appeared in an episode in 2009.

    1. This Is Us and Gilmore Girls star Milo Ventimiglia appeared as Lee Healy, a teenager whose stepfather is out to get him.

    Frazer Harrison / Getty Images, NBC

    2. Before playing Annalise Keating in How to Get Away With Murder, Viola Davis guest-starred as lawyer Donna Emmett in several SVU episodes from 2003–2008.

    Frazer Harrison / Getty Images, NBC

    3. Academy Award nominee Bradley Cooper appeared as defense attorney Jason Whitaker in 2005.

    Alberto E. Rodriguez / Getty Images, NBC

    4. The Handmaid's Tale star Ann Dowd played three different characters on SVU between 2001 and 2009.

    Frazer Harrison / Getty Images / NBC

    5. Before playing Haley Dunphy on Modern Family, Sarah Hyland appeared as two different characters on SVU.

    Frazer Harrison / Getty Images, NBC

    6. Academy Award winner Jeremy Irons guest-starred as Dr. Captain Jackson in two episodes.

    Michael Loccisano / Getty Images, NBC

    7. The Vampire Diaries star Paul Wesley played two different characters on SVU between 2000 and 2005.

    NBC, Alberto E. Rodriguez / Getty Images

    8. After playing Lizzie in Lizzie McGuire, Hilary Duff appeared in an episode in 2009.

    Jamie Mccarthy / Getty Images, NBC

    9. Emmy Award winner Carol Burnett guest-starred as Birdie Sulloway, a woman who's suspected of killing her husband.

    Michael Loccisano / Getty Images, NBC

    10. Mean Girls star Amanda Seyfried appeared as Tandi McCain, a sexual assault survivor, in a 2004 episode.

    Mark Milan / Getty Images, NBC

    11. Maleficent and The Beguiled star Elle Fanning played Eden, a young girl who was found at a shady adoption agency.

    Michael Kovac / Getty Images, NBC

    12. After playing Emily Gilmore in Gilmore Girls, Kelly Bishop appeared in two episodes of SVU as defense attorney Julia Zimmer.

    Alberto E. Rodriguez / Getty Images, NBC

    She also appeared in an episode in Season 1 as an unnamed registrar.

    13. Before Unbreakable Kimmy Schmidt and 30 Rock, Jane Krakowski appeared in an episode in 2004.

    NBC, David Becker / Getty Images

    14. Nashville star Hayden Panettiere played two different characters on SVU between 2001 and 2005.

    Jamie Mccarthy / Getty Images, NBC

    15. Tennis pro Serena Williams played the character of Chloe Spiers in an episode in 2004.

    Jamie Mccarthy / Getty Images, NBC

    16. Pitch Perfect and The Hunger Games star Elizabeth Banks appeared as Jaina Jansen, the prime suspect in a murder investigation.

    Alberto E. Rodriguez / Getty Images, NBC

    17. Twin Peaks star Kyle MacLachlan actually played two different roles on SVU between 2004 and 2011.

    Tara Ziemba / Getty Images, NBC

    18. Before she was saving the galaxy as Gamora in Guardians of the Galaxy, Zoe Saldana appeared on an episode of SVU in 2004.

    Christopher Polk / Getty Images, NBC

    19. Full House star John Stamos guest-starred in an episode in 2011.

    Alberto E. Rodriguez / Getty Images, / Getty Images

    20. Will & Grace star Debra Messing guest-starred as Alicia Harding, a TV host who begins receiving death threats.

    Frederick M. Brown / Getty Images, NBC

    21. Shameless alum Noel Fisher played CSU tech Dale Stuckey in a few episodes in 2009.

    Matt Winkelmeyer / Getty Images, NBC

    22. Before starring as Daryl Dixon in The Walking Dead, Norman Reedus appeared as Derek Lord, an outspoken rock star.

    Frazer Harrison / Getty Images, NBC

    23. Pop star Jesse McCartney appeared in an episode in 2008.

    Charley Gallay / Getty Images, NBC

    24. American Horror Story star Sarah Paulson appeared as Anne Gillette, an heiress who was the prime suspect in the murder of her parents.

    Kevin Winter / Getty Images, NBC

    25. Before playing Clay in 13 Reasons Why, Dylan Minnette appeared in an episode in 2012.

    Frazer Harrison / Getty Images, NBC

    26. My Big Fat Greek Wedding star Nia Vardalos guest-starred as Minonna Efron in several episodes in 2013–2014.

    Joshua Blanchard / Getty Images, NBC

    27. Academy Award winner J.K. Simmons appeared as Dr. Emil Skoda in Season 1 and Season 2.

    Frederick M. Brown / Getty Images, NBC

    28. Before starring in Jane the Virgin, Andrea Navedo played a woman who slept with Det. Nick Amaro while he was undercover.

    Jamie Mccarthy / Getty Images, NBC

    29. Hamilton alum Leslie Odom Jr. appeared in several episodes of SVU as Reverend Curtis Scott.

    Bryan Bedder / Getty Images, NBC

    He even guest-starred in an episode opposite his Hamilton co-star Daveed Diggs in 2015.

    30. Full House star Bob Saget guest-starred as Glenn Cheales, a murder suspect, in Season 8.

    Dimitrios Kambouris / Getty Images, NBC

    31. Academy Award winner Whoopi Goldberg guest-starred as Janette Grayson, a business woman who falsely reported child abuse.

    Jamie Mccarthy / Getty Images

    32. Before she was singing in Pitch Perfect, Brittany Snow appeared as Jamie Hoskins, a student suspected of murdering another student.

    Emma Mcintyre / Getty Images, NBC

    33. After starring as Sabrina in Sabrina the Teenage Witch, Melissa Joan Hart appeared as Sarah Trent, a teacher accused of sexually assaulting one of her students.

    Bryan Bedder / Getty Images, NBC

    34. Will & Grace star Eric McCormack guest-starred as murder suspect Vance Shepard.

    Frazer Harrison / Getty Images, NBC

    35. Before she was Eliza on Younger, Sutton Foster played Rosemary, a member of a lesbian rights group whose friend is murdered.

    Frazer Harrison / Getty Images, NBC

    36. American Horror Story alum Denis O'Hare has played two different characters on SVU, one in Season 1 and the other in Season 14.

    Neilson Barnard / Getty Images

    37. Veep and Arrested Development star Tony Hale appeared in an episode in 2012.

    Frazer Harrison / Getty Images, NBC

    38. Sex and the City star Cynthia Nixon guest-starred in an episode in 2007.

    Dimitrios Kambouris / Getty Images, NBC

    39. Long before starring in House of Cards, Kate Mara appeared in an episode of SVU during Season 2.

    Dia Dipasupil / Getty Images, NBC

    40. Shameless star Cameron Monaghan appeared as Eddie Sandow, a teenager who holds two people hostage and has a special bond with Olivia Benson.

    Alberto E. Rodriguez / Getty Images, NBC

    41. Before starring as Damon Salvatore in The Vampire Diaries, Ian Somerhalder appeared in an episode of SVU in 2003.

    Frazer Harrison / Getty Images, NBC

    42. The Walking Dead star Lauren Cohan appeared in an episode of SVU in 2013.

    Neilson Barnard / Getty Images, NBC

    43. And basically the entire cast of Riverdale.

    Frazer Harrison / Matt Winkelmeyer / Dimitrios Kambouris / Getty Images / NBC

    Lili Reinhart, Casey Cott, Skeet Ulrich, Marisol Nichols, and Luke Perry all guest-starred on Law & Order: SVU before Riverdale.

    Do you have any SVU guest stars we didn't mention? Tell us in the comments!

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