31 Famous Siblings Now Vs. When They Were Kids That Prove Some Things Never Change
The more things change, the more they stay the same.
1. Billie Eilish and Finneas O'Connell now:

Rachel Luna / FilmMagic / Getty Images
illie Eilish and Finneas O'Connell back in the day:
@billieeilish / Via instagram.com
2. Jaden and Willow Smith now:

Pascal Le Segretain / Getty Images
Jaden and Willow Smith a long time ago:

Jason Merritt / FilmMagic / Getty Images
3. Khloe, Kim, and Kourtney Kardashian now:

Charles Sykes/Bravo / NBCU Photo Bank / NBCUniversal via Getty Images
Khloe, Kim, and Kourtney Kardashian forever ago:
@kimkardashian / Via instagram.com
And, of course, Robert Kardashian and Kris Jenner holding baby Rob!
4. Kylie and Kendall Jenner now:

Neilson Barnard / Getty Images
Kylie and Kendall Jenner way back when:
@kyliejenner / Via instagram.com
5. Solange and Beyoncé now:

Nicholas Hunt / Getty Images for Balmain
Solange and Beyoncé long ago:
@theshaderoom / Via instagram.com
6. Chloe, Cara, and Poppy Delevingne now:

Mike Marsland / WireImage / Getty Images
Chloe, Cara, and Poppy Delevingne as kids:
@poppydelevingne / Via instagram.com
7. The Jonas Brothers now:

Frazer Harrison / Getty Images
The Jonas Brothers years ago:
8. Serena and Venus Williams now:

amie McCarthy / Getty Images for Lotte New York Palace
Serena and Venus Williams as kids:

Ken Levine / Getty Images
9. Ashlee and Jessica Simpson now:

Frazer Harrison / Getty Images
Ashlee and Jessica Simpson in the old days:
@jessicasimpson / Via instagram.com
10. Frankie and Ariana Grande now:
@frankiejgrande / Via instagram.com
Frankie and Ariana Grande then:
#TBT to when @ArianaGrande was Dorothy, @joangrande played the wicked witch's sista & I was in the middle of puberty.
11. Bella and Gigi Hadid now:

Bertrand Rindoff Petroff / Getty Images
Bella and Gigi Hadid some time ago:
@gigihadid / Via Instagram: @gigihadid
12. Cole and Dylan Sprouse now:

Frazer Harrison / Getty Images
Cole and Dylan Sprouse in the past:

The LIFE Picture Collection via Getty Images
13. Tamera and Tia Mowry now:

Araya Diaz / WireImage / Getty Images
Tamera and Tia Mowry eons ago:
@tiamowry / Via instagram.com
14. Miley and Noah Cyrus now:

Kevin Mazur / Getty Images for The Recording Academy
Miley and Noah Cyrus many years ago:
@noahcyrus / Via instagram.com
15. Aly and AJ now:

Randy Shropshire / Getty Images for The Art of Elysium
Aly and AJ back in the day:
#tbt
16. Chris and Liam Hemsworth now:

Charley Gallay / Getty Images for Disney
Chris and Liam Hemsworth back then:
@chrishemsworth / Via instagram.com
17. Paris and Nicky Hilton now:

Roy Rochlin / WireImage / Getty Images
Paris and Nicky Hilton then:

Jim Smeal/Ron Galella Collection via Getty Images
18. Mary-Kate, Ashley, and Elizabeth Olsen now:

Jamie McCarthy / Getty Images
Mary-Kate, Ashley, and Elizabeth Olsen back then:
19. Zooey and Emily Deschanel now:

Jon Kopaloff / FilmMagic / Getty Images
Zooey and Emily Deschanel years ago:
20. Britney and Jamie Lynn Spears now:

Image Group LA/Disney Channel via Getty Images
Britney and Jamie Lynn Spears then:

@jamielynnspears / Via Instagram: @jamielynnspears
21. Hilary and Haylie Duff now:

Rachel Murray / Getty Images for Words with Friends 2
Hilary and Haylie Duff long ago:
@hilaryduff / Via instagram.com
22. Tracee Ellis Ross and Evan Ross now:

Arnold Turner / Getty Images for Freedom Road Productions
Tracee Ellis Ross and Evan Ross decades ago:

Ron Galella / Ron Galella Collection via Getty Images
23. Jake and Maggie Gyllenhaal now:

Paul Bruinooge/Patrick McMullan via Getty Images
Jake and Maggie Gyllenhaal ages ago:

Bei/Shutterstock
24. John and Joan Cusack now:

Timothy Hiatt / Getty Images
John and Joan Cusack a loooong time ago:

Ron Galella, Ltd./Ron Galella Collection via Getty Images
25. Prince William and Harry now:

Shaun Botterill / Getty Images
Prince William and Harry a long time ago:

Tim Graham Photo Library via Getty Images
26. Raini and Rico Rodriguez now:

Ethan Miller / FilmMagic / Getty Images
Raini and Rico Rodriguez way back when:
@dance_raini_fiesta_fan / Via Instagram: @dance_raini_fiesta_fan
27. Nicole and Sofia Richie now:
@sofiarichie / Via instagram.com
On the left is Harlow, Nicole's daughter.
Nicole and Sofia Richie then:

Jason Merritt / FilmMagic / Getty Images
28. Jessica and Joshua Alba now:

Jon Kopaloff / FilmMagic / Getty Images
Jessica and Joshua Alba way back when:
@jessicaalba / Via instagram.com
29. Alec, Daniel, Stephen, and William Baldwin now:

Jason LaVeris / FilmMagic / Getty Images
Alec, Daniel, Stephen, and William Baldwin back in the day:

The LIFE Picture Collection via Getty Images
30. Julianne and Derek Hough now:

Roy Rochlin / Getty Images
Julianne and Derek Hough back then:

Derek Hough / Via Facebook: watch
31. Chad and Rob Lowe now:

Alberto E. Rodriguez / Getty Images
Chad and Rob Lowe in days past:

The LIFE Picture Collection via Getty Images