Young Sheldon Kids, Then & Now: See How They've Grown Over 100 Episodes

Thursday’s Young Sheldon (CBS, 8/7c) marks the Big Bang Theory spinoff’s 100th episode — and in honor of the milestone outing, TVLine is looking back at how the Cooper children (played by Iain Armitage, Raegan Revord and Montana Jordan) have grown from precocious kiddos to young adults in the blink of an eye.

In the momentous episode, titled “A Solo Peanut, a Social Butterfly and the Truth,” Sheldon gets an odd request from fellow child prodigy Paige (played by recurring guest star McKenna Grace). Meanwhile, George Sr. and Mary find themselves caught in the middle of Meemaw and Dale’s breakup, and 17-year-old Georgie comes clean to 30-year-old girlfriend Mandy (Emily Osment).

Scroll down to see then-and-now photos revealing just how much the Young Sheldon kids have grown over the last five seasons, then drop a comment with your hopes for the big 1-0-0.