Daniel Sudeikis
Jason Sudeikis confirmed on Today that he was named Daniel after his father, but following some confusion, his mom started using his middle name Jason to avoid confusion.
Eilleen Regina Edwards
Shania Twain shared the origin story of her stage name during an appearance on Apple Music's Home Now Radio: "In short, I was born, Eilleen Regina Edwards, and then I was adopted and I became Eilleen Regina Twain. Then I became a professional singer and I needed a stage name that sounded a little less like my grandmother's name, because I'm named after my grandmother, both my grandmothers, Eilleen and Regina. I think, in my mind, I was just not really wanting to be called my grandmother's name onstage, so I decided to change it to Shania Twain. I met somebody with the name Shania, thought it was beautiful, and Shania Twain was born."
Belcalis Almanzar
Cardi B took on the name Bacardi after family and friends started calling her sister Hennessy. Later on she shortened the name to something that suited her quite a bit more.
Jelena Noura Hadid
Oddly enough, Gigi Hadid got her stage name in school when the teacher would confuse her and a girl named Helena. Since her mom called her "gigi" as a term of endearment at home, she told the teacher to just call her Gigi and it simply stuck.
Mark Vincent
If you're looking for an explosive action-star name, how about Vin Diesel instead?
Rachel Meghan Markle
Before she became the Duchess of Sussex, Meghan Markle was briefly known as Rachel.
Destiny Hope Cyrus
Miley Cyrus' bright smile is what inspired her childhood nickname, Smiley. Eventually the name was shortened to Miley and it stuck.
Peter Gene Hernandez
Apparently the singer looked more like a Bruno than a Peter, so one day his dad started calling him Bruno. Ever since, he has been known as Bruno Mars.
Stefani Germanotta
Before the meat dresses and chart-topping music, Lady Gaga was just an everyday girl from New York.
Laura Jeanne Reese Witherspoon
Turns out Reese isn't even Reese Witherspoon's middle name. The actress chose the moniker in honor of her mother, whose maiden name is Reese.
Elizabeth Woolridge Grant
Every artist has an alter ego, and Lana Del Rey just happens to be the persona of choice for the singer.
Christopher Edwin Breaux
In 2014, Frank Ocean legally changed his name because, why not?
Elizabeth Stamatina Fey
A little known fact about 30 Rock's Tina Fey is that she is actually named Elizabeth. The comedian made a not so subtle tribute to her birth name by naming her character Liz Lemon.
Calvin Broadus
This pioneer of West Coast rap would later go on to be known as Snoop Dogg.
Ella Marija Lani Yelich-O'Connor
Turns out the "Royals" singer is really into learning about the aristocracy, hence the reason why she chose the name Lorde, but with a feminine 'e.'
Enrique Morales
Before he started shaking his bonbon for the masses, music superstar Ricky Martin went by this everyday name.
Amethyst Kelly
It's hard to believe that Iggy Azalea was born Amethyst Kelly!
Adam Richard Wiles
Fans were confused when Taylor Swift thanked then-boyfriend Adam in an acceptance speech, which lead people to the discovery that Calvin Harris is simply a stage name. The DJ told Shortlist magazine he chose the name because his first single was more soulful and wanted something a bit more "racially ambiguous."
Jennifer Anastassakis
Before she became a household name, this was what erstwhile Friend Jennifer Aniston answered to.
Alicia Augello Cook
Alicia Keys didn't always have such a musical name.
Thomas Mapother IV
Before he became arguably the biggest movie star in the world, Tom Cruise went by this name.
Natalie Hershlag
Back when she was born in 1980, this was how the future bigtime actress Natalie Portman greeted the world.
Amanda Lee Rogers
Before she became a big-time TV star and married Ellen DeGeneres, this was the name Portia de Rossi answered to.
Reginald Dwight
Guess music superstar Elton John didn't think his original name would be a hit with audiences.