The Cooper Family poses for a Young Sheldon promo
(CBS)

Missy Goes Through Some Serious Growth in ‘Young Sheldon’

Audiences are saying goodbye to Young Sheldon this week, but along with Sheldon himself, we’re bidding farewell to a whole cast of memorable characters—including Missy, his twin sister. Missy has grown up a lot during the show’s run, but how old is she, exactly?

Recommended Videos

Young Sheldon is a prequel to The Big Bang Theory, the beloved sitcom about a group of physicists. Among those scientists is Sheldon Cooper, a social awkward prodigy who enjoys an illustrious career at Cal Tech. In Young Sheldon, we get to see Sheldon’s early years, including the adventures of his quirky Christian family in a Texas suburb.

Over the course of its seven seasons, though, Young Sheldon has proven to be more than just a prequel. Sheldon and his family have revealed a deep well of charm and heart, navigating everything from college classes for 10-year-olds to destructive hurricanes and devastating deaths in the family.

One of the core relationships in Young Sheldon is Sheldon’s relationship with his twin sister, Missy. Played by Raegan Revord, Missy is the polar opposite of Sheldon. While Sheldon is studious and bookish, as befitting his status as a genius, Missy has little interest in academics. Instead, she’s outgoing, reckless, and constantly annoyed by her twin brother. Interestingly, Missy eventually develops a friendship with Paige, Sheldon’s gifted rival, after Paige gains a rebellious streak due to her parents’ divorce.

With all those plot developments, it’s no surprise that Missy goes through a lot of growth throughout the seven seasons of Young Sheldon.

How old is Missy in Young Sheldon?

When the series begins, Missy, like Sheldon, is nine years old. However, by the time the series ends, they’re both 14. Like most young actors, though, Revord is a bit older than her character. As of this writing, Revord is 16 years old.

If the end of Young Sheldon has you missing Missy, don’t worry—you can revisit her cameo appearances in The Big Bang Theory. Played by Courtney Henggeler, the adult Missy appears in three episodes of the classic sitcom.


The Mary Sue is supported by our audience. When you purchase through links on our site, we may earn a small affiliate commission. Learn more
related content
Read Article How Many Seasons Of Bridgerton Will There Be?
The Bridgerton extended family.
Read Article Daphne Bridgerton Got Her Happy Ending. So Where Is She Now?
Simon and Daphne at the ball in Season 1 of Bridgerton
Read Article Here’s How Penelope’s Father’s Fate Matches Up With the ‘Bridgerton’ Books
The Featherington family drinks champagne in Bridgerton
Read Article If You Want to Get In on ‘Bridgerton,’ You’ve Only Got One Option
Key art for Bridgerton season 3 on Netflix, with Colin Bridgerton, Peneope Featherington, Queen Charlotte, Anthony and Kate Bridgerton, and more all featured. Colin and Penelope stand in front of a mirror.
Read Article Mr. Worldwide Himself Weighs in on That ‘Bridgerton’ Cover
Colin and Penelope gaze into each other's eyes
Related Content
Read Article How Many Seasons Of Bridgerton Will There Be?
The Bridgerton extended family.
Read Article Daphne Bridgerton Got Her Happy Ending. So Where Is She Now?
Simon and Daphne at the ball in Season 1 of Bridgerton
Read Article Here’s How Penelope’s Father’s Fate Matches Up With the ‘Bridgerton’ Books
The Featherington family drinks champagne in Bridgerton
Read Article If You Want to Get In on ‘Bridgerton,’ You’ve Only Got One Option
Key art for Bridgerton season 3 on Netflix, with Colin Bridgerton, Peneope Featherington, Queen Charlotte, Anthony and Kate Bridgerton, and more all featured. Colin and Penelope stand in front of a mirror.
Read Article Mr. Worldwide Himself Weighs in on That ‘Bridgerton’ Cover
Colin and Penelope gaze into each other's eyes
Author
Julia Glassman
Julia Glassman (she/her) holds an MFA from the Iowa Writers' Workshop, and has been covering feminism and media since 2007. As a staff writer for The Mary Sue, Julia covers Marvel movies, folk horror, sci fi and fantasy, film and TV, comics, and all things witchy. Under the pen name Asa West, she's the author of the popular zine 'Five Principles of Green Witchcraft' (Gods & Radicals Press). You can check out more of her writing at <a href="https://juliaglassman.carrd.co/">https://juliaglassman.carrd.co/.</a>