There are countless famous siblings we see alllllll the time — but if you ever stopped and looked at their ages, you might be a little surprised by how far apart they actually are.

Kylie Jenner / YouTube / Via youtube.com
Here are some celeb siblings with age gaps that might be a bit larger than you expected:
1.
Kim Kardashian and Kylie Jenner have a 17-year age gap.
Nbc / Nathan Congleton / NBC via Getty Images, Axelle / FilmMagic
Nbc / Nathan Congleton / NBC via Getty Images, Axelle / FilmMagic
Kim, the second oldest of the Kar-Jenner clan, is currently 41. And Kylie, the youngest, is 24 (25 in August). Like, I knew they had an age difference, but I didn’t know it was 17 years.
Ian West – Pa Images / PA Images via Getty Images
Now, let’s bring in Kourtney, the oldest of the siblings at 43. She and Kylie have an age gap of 19 years.
Axelle / FilmMagic / Getty Images
2.
Scott Eastwood and Kyle Eastwood have an age gap of 18 years.
Robyn Beck / AFP via Getty Images, Pascal Le Segretain / Getty Images
Robyn Beck / AFP via Getty Images, Pascal Le Segretain / Getty Images
Scott is 36, and Kyle is 54.
Axelle / FilmMagic / Getty Images
3.
Nicole Richie and Sofia Richie have an age gap of 17 years.
Presley Ann / Getty Images for MTV, Jamie Mccarthy / Getty Images for Elton John AIDS Foundation
Presley Ann / Getty Images for MTV, Jamie Mccarthy / Getty Images for Elton John AIDS Foundation
Nicole is 40, and Sofia is 23.
Jeff Kravitz / FilmMagic / Getty Images
4.
Tracee Ellis Ross and Evan Ross have a 16-year age gap.
Jon Kopaloff / Getty Images, Frazer Harrison / Getty Images
Jon Kopaloff / Getty Images, Frazer Harrison / Getty Images
Tracee is 49, and Evan is 33.
Michael Kovac / Getty Images for AFI
5.
Alexander Skarsgård and Bill Skarsgård have an age gap of 14 years.
Steve Granitz / FilmMagic / Getty Images, George Pimentel / Getty Images
Steve Granitz / FilmMagic / Getty Images, George Pimentel / Getty Images
Alexander is 45, and Bill is 31.
Rachel Murray / Getty Images for FLAUNT Magazine
6.
Kevin Jonas, the oldest Jonas brother, and Frankie Jonas, the youngest, have a 13-year age gap.
David Livingston / Getty Images, Denise Truscello / Getty Images for Nellie’s Southern Kitchen
David Livingston / Getty Images, Denise Truscello / Getty Images for Nellie’s Southern Kitchen
Kevin is 34, and Frankie is 21. And apparently, they’re now hosting a new competition show together called Claim to Fame.
Maarten de Boer / ABC via Getty Images
But, of course, we can’t forget these old days!
Jeff Kravitz / FilmMagic / Getty Images
7.
Brooklyn Beckham and Harper Beckham have an age gap of 12 years.
Taylor Hill / Getty Images, Michael Reaves / Getty Images
Taylor Hill / Getty Images, Michael Reaves / Getty Images
Brooklyn, the oldest Beckham kid, is 23, and Harper, the youngest, is 11.
Tim Whitby / Getty Images
8.
Rosanna Arquette and David Arquette have an age gap of 12 years.
Taylor Hill / Getty Images, Alberto E. Rodriguez / Getty Images
Taylor Hill / Getty Images, Alberto E. Rodriguez / Getty Images
Rosanna is 62, and David is 50.
Gregg Deguire / FilmMagic / Getty Images
9.
Chloë Grace Moretz and Trevor Duke Moretz have an age gap of nearly 11 years.
Emma Mcintyre / Getty Images, Han Myung-gu / WireImage / Getty Images
Emma Mcintyre / Getty Images, Han Myung-gu / WireImage / Getty Images
Chloë is 25, and Trevor — who acted in movies like Kick-Ass 2 — is 35 (going on 36).
Jennifer Graylock / Getty Images for Forevermark
10.
Ariana Grande and Frankie Grande have an age gap of 10 years.
David Crotty / Patrick McMullan via Getty Images, Alberto E. Rodriguez / Getty Images for GLAAD
David Crotty / Patrick McMullan via Getty Images, Alberto E. Rodriguez / Getty Images for GLAAD
Ariana is 29, and Frankie is 39.
Kevin Mazur / WireImage / Getty Images
11.
Toni Braxton and Tamar Braxton nearly have a 10-year age gap as well.
Steve Granitz / WireImage / Getty Images, Paras Griffin / Getty Images
Steve Granitz / WireImage / Getty Images, Paras Griffin / Getty Images
Toni is 54 (going on 55!), and Tamar is 45.
Frazer Harrison / Getty Images
12.
Oliver Hudson and Wyatt Russell are also nearly a decade apart.
Steve Granitz / FilmMagic / Getty Images, David Livingston / Getty Images
Steve Granitz / FilmMagic / Getty Images, David Livingston / Getty Images
Oliver is 45 (46 in September), and Wyatt is 36.
Rodin Eckenroth / Getty Images
13.
Demi Lovato and Madison De La Garza have an age gap of nine years.
Steve Granitz / FilmMagic, John Sciulli / Getty Images for CBS Films
Steve Granitz / FilmMagic, John Sciulli / Getty Images for CBS Films
Demi is currently 29, and Madison is 20. And here they are back in 2010, during those Disney days. SO. LONG. AGO.
Steve Granitz / WireImage / Getty Images
14.
Jesse Eisenberg and Hallie Eisenberg also have an age gap of nine years.
Sylvain Gaboury / Patrick McMullan via Getty Images, Michael Stewart / WireImage / Getty Images
Sylvain Gaboury / Patrick McMullan via Getty Images, Michael Stewart / WireImage / Getty Images
Jesse is 38 (going on 39), and Hallie is 30.
Kevin Mazur / WireImage for Tony Awards Productions / Getty Images
And here’s Jesse and Hallie at the 1999 premiere for Bicentennial Man, where Hallie played young “Little Miss” Amanda Martin. So cute!!!
Vince Bucci / AFP via Getty Images
15.
Miley Cryus and Noah Cyrus have an age gap of nearly eight years.
Amy Sussman / WireImage / Getty Images, Nbc / NBCU Photo Bank via Getty Images
Amy Sussman / WireImage / Getty Images, Nbc / NBCU Photo Bank via Getty Images
Miley is 29 (30 in November), and Noah is 22. When Miley first auditioned for Hannah Montana at 11, Noah was just a lil’ one!
Kevin Mazur / Getty Images for The Recording Academy
16.
Trey Smith and Willow Smith have an age gap of eight years.
Frazer Harrison / Getty Images
Frazer Harrison / Getty Images
Trey — the oldest Smith kid — is 29, and Willow, the youngest, is 21.
Lionel Hahn / Getty Images
17.
Beau Bridges and Jeff Bridges also have an age gap of eight years.
David Livingston / Getty Images, Jamie Mccarthy / Getty Images
David Livingston / Getty Images, Jamie Mccarthy / Getty Images
Jeff is 72, and Beau is 80.
Robin Marchant / Getty Images for Twentieth Century Fox
18.
Twins Tia and Tamera Mowry are eight years older than their brother, Tahj Mowry.
Tommaso Boddi / WireImage / Getty Images, Rodin Eckenroth / WireImage / Getty Images
Tommaso Boddi / WireImage / Getty Images, Rodin Eckenroth / WireImage / Getty Images
Tia and Tamera are 44, and Tahj is 36.
Imeh Akpanudosen / Getty Images
19.
And finally, Chris Hemsworth and Liam Hemsworth have an age gap of almost seven years.
Don Arnold / WireImage / Getty Images, Valerie Macon / AFP via Getty Images
Don Arnold / WireImage / Getty Images, Valerie Macon / AFP via Getty Images
Chris is 38 (going on 39), and Liam is 32. Oh, and the oldest Hemsworth brother, Luke, is 40 (going on 41). Take it all in.
Kevin Winter / Getty Images
Did any of these sibling age gaps surprise you when you first discovered them? Let us know in the comments below!