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Young Sheldon Cooper from Young Sheldon

Young Sheldon Cooper (played by Iain Armitage with voiceover from Jim Parsons) is the titular protagonist of the CBS sitcom Young Sheldon.  A spinoff of the popular Big Bang Theory, the series focuses on Sheldon Cooper’s childhood in East Texas, where his proclivity for learning and genius intellect are often at odds with his family and peers, including his older brother Georgie.  Whereas the elder Sheldon was known for his geeky collection of t-shirts, young Sheldon often favors plaid button-ups and bow ties, making for a fun and comfortable costume.  To put the finishing touches on the look, be sure to bring a vintage-looking briefcase and style your hair with a little shine.

Albert Einstein

Despite his somewhat disheveled look, Albert Einstein is one of the most brilliant minds of the 20th century. He won the Nobel Prize in Physics for his contribution to theoretical physics. Even most people can recite his famous equation, E=mc2 (though trying to explain it might be another story).

Sherlock Holmes (BBC)

BBC’s Sherlock transports the eponymous detective from his Victorian-era home to the 21st century. While that may mean he’s solving crime with the assistance of modern technology and sending messages via text instead of telegram, his vast intelligence, deductive reasoning and gentleman’s dress sense all remain intact.

Sheldon Cooper

In The Big Bang Theory, Sheldon Cooper (Jim Parsons) has a genius IQ and photographic memory, though he spends most of those brain cycles on comic books, sci-fi, and sci-fi comic books. He himself enjoys costumes, even dressing up as Raggedy C3P-O one Halloween.