Fans of The Big Bang Theory were introduced to "Missy Cooper" in 2008 when it was revealed that "Sheldon Cooper" had a fraternal twin sister! Despite being twins, "Missy" turns out to be quite the polar opposite of "Sheldon", cheeky and good-looking! 

Much to the dismay of "Sheldon", "Missy" attracts the attention of his friends, who proceed to fall all over "Missy" to get her attention! "Missy" may have only appeared in three episodes, but she sure did know how to make a lasting impression!

Courtney Henggeler attends YouTube Original Cobra Kai Season 2 Premiere 2019

Courtney Henggeler as "Missy Cooper" in The Big Bang Theory

The gorgeous grown-up "Missy Cooper" was played by none other than American actress Courtney Henggeler! Courtney would get her start with a film debut in B-horror movie The Bog Creatures (2003) and an appearance on hit medical drama House, before making her way to The Big Bang Theory.

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In 2008, Courtney Henggeler was cast into the role of "Missy Cooper" on The Big Bang Theory and would make only three but very memorable appearances on the show in 2008, 2013, and 2018. 

Courtney Henggeler attends the LA Family Housing Annual LAFH Awards And Fundraiser Celebration 2019

Courtney Henggeler Today

While Courtney Henggeler didn't exactly get the big break she was looking for with The Big Bang Theory, the role would lead to her true breakthrough role in 2018 when she landed a role on YouTube's Cobra Kai as "Amanda LaRusso", wife of "Daniel LaRusso" from the original Karate Kid.

Today, you can also find Courtney starring on Hulu horror series In the Dark, and when she's not busy filming you will catch her spending quality time with her husband, producer Ross Kohn and their adorable children Oscar and daughter Georgie.