
Here are 17 side-by-sides of the Young Sheldon cast at the start of the show vs. the end:
1. Here’s Iain Armitage as Sheldon Cooper in Season 1:

And here’s Iain in Season 7:

Here’s a side-by-side:

2. Here’s Raegan Revord as Missy Cooper, Sheldon’s twin sister, in Season 1:

And here’s Raegan in Season 7:

Here’s a side-by-side:

3. Here’s Montana Jordan as Georgie Cooper, Sheldon’s older brother, in Season 1:

And here’s Montana in Season 7:

Here’s a side-by-side:

4. Here’s Zoe Perry as Mary Cooper, Sheldon’s mom, in Season 1:

And here’s Zoe in Season 7:

Here’s a side-by-side:

5. Here’s Lance Barber as George Cooper Sr., Sheldon’s dad, in Season 1:

Here’s Lance in Season 7:

Here’s a side-by-side:

6. Here’s Annie Potts as Connie Tucker, Sheldon’s Meemaw, in Season 1:

And here’s Annie in Season 7:

Here’s a side-by-side:

7. Here’s Ryan Phuong as Tam Nguyen, Sheldon’s childhood best friend, in Season 1:

And here’s Ryan in Season 7:

Here’s a side-by-side:

8. Here’s Wyatt McClure as Billy Sparks, Sheldon’s neighbor, in Season 1:

And here’s Wyatt in Season 7:

Here’s a side-by-side:

9. Here’s Mckenna Grace as Paige Swanson, Sheldon’s friend/rival, when she made her debut in Season 2:

And here’s Mckenna during her final appearance in Season 6:

And here’s a side-by-side:

10. Here’s Matt Hobby as Pastor Jeff, the Coopers’ pastor-turned-neighbor, in Season 1:

And here’s Matt in Season 7:

Here’s a side-by-side:

11. Here’s Wallace Shawn as John Sturgis, Sheldon’s professor and mentor, in Season 1:

And here’s Wallace in Season 7:

Here’s a side-by-side:

12. Here’s Craig T. Nelson as Dale Ballard, Connie’s love interest and Georgie’s boss, when he debuted in Season 3:

And here’s Craig in Season 7:

Here’s a side-by-side:

13. Here’s Emily Osment as Mandy McAllister, Georgie’s partner, when she made her debut in Season 5:

And here’s Emily in Season 7:

Here’s a side-by-side:

14. Here’s Melissa Peterman as Brenda Sparks, the Coopers’ neighbor, in Season 1:

And here’s Melissa in Season 7:

Here’s a side-by-side:

15. Here’s Doc Farrow as Assistant Coach Wayne Wilkins, Sheldon’s P.E. teacher and George’s coworker, in Season 1:

And here’s Doc in Season 7:

Here’s a side-by-side:

16. Here’s Ed Begley Jr. as Dr. Grant Linkletter, Sheldon’s professor, when he debuted in Season 2:

And here’s Ed in Season 7:

Here’s a side-by-side:

17. And finally, here’s the Cooper family in Season 3 (when the title card changed to include all of them):

And here’s the Cooper family in Season 7:

Here’s a side-by-side:
