15 Actors Who Look So Much Like Their Famous Family Members, They Were Cast To Play Them

Have you ever dug through old family photos and found a relative who looks remarkably like you?

Here are 15 actors who look so much like their famous family members, they were cast to play them:

1. Ralph Fiennes played Lord Voldemort in the Harry Potter franchise from 2005-2011.

In 2009, his nephew, Hero Fiennes Tiffin , played 11-year-old Tom Riddle (aka child Voldemort) in Harry Potter and the Half-Blood Prince .

Here's a side-by-side:

©Warner Bros. / courtesy Everett Collection

And here are Ralph and Hero side-by-side IRL in 2009:

Steve Granitz / WireImage / Via Getty, Jon Furniss / WireImage / Via Getty

2. Karen Gillan played Amy Pond on Doctor Who from 2010-2013.

Between 2010-2012, her cousin, Caitlin Blackwood, appeared as younger Amy.

Here's a side-by-side:

3. In 2002, Britney Spears starred as Lucy Wagner in Crossroads .

Her little sister, Jamie Lynn Spears, played young Lucy in the opening scene.

Here's a side-by-side:

Archive Photos / Getty Images, Paramount Pictures / Via Netflix

4. From 2009-2011, Demi Lovato starred on Sonny with a Chance as Sonny Munroe.

Their little sister, Madison De La Garza, cameoed as young Sonny in 2009.

Here's a side-by-side:

Disney Channel / Via Disney+

5. In I Am Sam , Dakota Fanning played 6-year-old Lucy Diamond Dawson.

Her little sister, Elle Fanning, played 2-year-old Lucy.

Here's a side-by-side:

New Line Cinema / Via youtube.com , New Line Cinema / ©New Line Cinema/Courtesy Everett Collection

6. That's not the only time the Fanning sisters have shared a role. In the 2002 SYFY miniseries Taken , Dakota played Allie Keys.

Elle played 3-year-old Allie.

Here's a side-by-side:

7. From 2013-2019, Laverne Cox played Sophia Burset on Orange Is the New Black .

In two episodes, her twin brother, M. Lamar, played Sophia in flashback scenes set before her transition.

Here's a side-by-side:

Ali Goldstein / ©Netflix / courtesy Everett Collection, Netflix

8. From 2005-2010, Georgie Henley played Lucy Pevensie in The Chronicles of Narnia: The Lion, the Witch, and the Wardrobe and the sequels Prince Caspian and The Voyage of the Dawn Treader

Her older sister, Rachael Henley, played grown-up Lucy in The Lion, the Witch, and the Wardrobe .

Here's a side-by-side:

Walt Disney Studios Motion Pictures / Via Disney+

9. In 1994, Macaulay Culkin played Richie Rich Jr. in Richie Rich.

His youngest brother, Rory Culkin, played young Richie Rich.

Here's a side-by-side:

Warner Bros / ©Warner Bros/Courtesy Everett Collection, Warner Bros / Via youtube.com

10. Kieran Culkin played Jason "Igby" Slocumb Jr. in 2002's Igby Goes Down .

His little brother, Rory Culkin, played 10-year-old Igby.

Here's a side-by-side:

United Artists / ©United Artists/Courtesy Everett Collection

11. Alaqua Cox played Maya Lopez/Echo in 2021's Hawkeye and 2024's Echo .

Her cousin, Darnell Besaw, played young Maya in Echo .

Here's a side-by-side:

Disney+

12. Oscar Isaac played Marc Spector/Steven Grant/Moon Knight on the 2022 series Moon Knight .

His younger brother, Michael Benjamin Hernandez, was hired as his body double for the joint Marc and Steven scenes.

Here's the brothers together IRL:

13. Penélope Cruz played Anjelica in Pirates of the Caribbean: On Stranger Tides .

The day before filming began, Penélope found out she was pregnant, so director Rob Marshall hired her younger sister, Mónica Cruz, as her body double.

Here's a side-by-side:

peter Mountain/©Walt Disney Pictures / courtesy Everett Collection, Walt Disney Studios Motion Pictures / Via youtube.com

And here are the sisters together IRL:

14. Honeysuckle Weeks played Millie in the 1997 miniseries The Rag Nymph .

Her little sister, Perdita Weeks, played young Millie.

Here's a side-by-side:

15. And finally, August Maturo played Auggie Matthews on Girl Meets World from 2014-2017.

In 2016, his little brother, Ocean Maturo, appeared as younger Auggie.

Here's a side-by-side:

Which actor relatives do you think look the most alike? Let us know in the comments!