A lot can be said with a name—especially in Hollywood. Choosing the right one could potentially make or break a career in showbiz. It'll either help fans easily remember you or could result in you blending in with the crowd. Opt for something too complicated and people might not be able to pronounce it, which could mean trouble come awards season. It's not as simple of a decision as you'd think!
For that reason, stars put a lot of thought into the choice. One of the biggest trends is going by a middle name. Maybe it sounds better (Meghan Markle does have a nice ring to it!), or perhaps it's just more unique (there's no denying Ashton Kutcher is more memorable than Christopher Kutcher). Other celebrities choose something more sentimental, like paying tribute to a late family member or honoring a mother or grandmother's maiden name. And when all else fails, a childhood nickname does the trick (we're looking at you, Miley).
From royals to Grammy-winning singers and everyone in between, your favorite star's real name might surprise you. Learn all about how celebrities like Reese Witherspoon, Olivia Wilde, Katy Perry, and others ended up being called what you know them as today.
Olivia Wilde
Real name: Olivia co*ckburn
Wilde hails from a family of writers and journalists, so it's no wonder she modeled her last name on novelist Oscar Wilde. She told The Observer, "At the time, I was doing The Importance of Being Earnest—I was playing Gwendolyn , and I was so in love with it. Oscar Wilde is someone who I respect for so many reasons—a revolutionary, a comedian and a profound thinker."
Reese Witherspoon
Real name: Laura Jeanne Reese Witherspoon
The actress chose to go by Reese for her first film appearance in The Man in the Moon when she was 14 years old for a sweet reason: It's her mother's maiden name.
Bruno Mars
Real name: Peter Gene Hernandez
The "That's What I Like" singer was nicknamed Bruno for the cutest reason: he was a chubby baby. He told Rap Up, "Bruno is after Bruno Sammartino, who was this big, fat wrestler. I was this chunky little baby, so my dad used to call me that as a nickname. Mars came up because a lot of girls say I'm out of this world!"
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Gigi Hadid
Real name: Jelena Hadid
"In first or second grade, there was a girl named Helena and it got confusing with the teacher who had to call out our names," the model told Vogue. "And so the teacher asked my mom, 'If I needed to call Jelena a nickname, what would it be?' And my mom was like, 'I call her Gigi sometimes,' and the name stuck."
Katy Perry
Real name: Katheryn Hudson
The "I Kissed a Girl" singer adopted her mother's last name to avoid being confused with actress Kate Hudson.
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Demi Moore
Real name: Demetria Gene Guynes
According to a 2007 profile on the star by The Guardian, her mother chose the name Demetria after seeing it in a shampoo ad. Her last name, Guynes, is after the man believed to be her father, Danny Guynes. Later in life, she discovered her real dad was actually a man named Charles Harman. As for Moore? She married a singer named Freddy Moore in 1980 and kept his name after the divorce.
Joaquin Phoenix
Real name: Joaquín Rafael Bottom
Phoenix's parents ditched the last name Bottom in 1979 and reinvented themselves as the Phoenix family.
Kit Harington
Real name: Christopher Catesby Harington
Harington didn't know his real name was Christopher until he was 11 years old. "I think they could see that I wanted to be Kit, but Christopher was a bit of a tradition," he told Glamour. "My brother's name is Jack, but his real name is John. Kit is traditionally an offshoot of Christopher, it's just not used that often. My middle name is Catesby."
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Julianne Moore
Real name: Julie Anne Smith
Moore's given name was too popular in actors' unions, so she created a mash-up of her other family members's names. In an interview with The New York Times, she said, "My father's middle name is Moore; my mother's name is Anne. So I just slammed the Anne onto the Julie. That way I could use both of their names and not hurt anyone's feelings. But it's horrible to change your name. I'd been Julie Smith my whole life, and I didn't want to change it."
Meghan Markle
Real name: Rachel Meghan Markle
Old yearbook photos show her as Meghan, proving she has been going by her middle name for quite some time now.
Prince Harry
Real name: Henry Charles Albert David
Like his wife, the Duke of Sussex also goes by another name. "My name is Henry as well," the royal told a young WellChild Award winner in 2022. "But everyone calls me Harry. I have no idea why."
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Emma Stone
Real name: Emily Jean Stone
"My real name is Emily. But it was taken at SAG," the actress told W Magazine. "I was 16.... So to ask a 16-year-old to pick a new name is really an interesting process, because I was like, 'I'm going to be Riley.' And so my name was Riley Stone for about six months." But the new name didn't go so well—Stone didn't respond to it when she was on set. "So then I changed it to Emma, because you know, it's closer to Emily, but most people call me 'M,' that know me well."
Jamie Foxx
Real name: Eric Marlon Bishop
Foxx explained the reason for his name change on Late Show with David Letterman. When he was getting started on the stand-up circuit, he noticed female comedians were so rare that they would always score a slot. "So I went to the list and wrote down unisex names. Stacy Green, Tracy Brown…Jamie Foxx! And I'm the first guy called. He goes, 'Jamie Foxx, is she here?' I said, 'No, brother, that's me.' And then I go onstage and I get a standing ovation."
Calvin Harris
Real name: Adam Richard Wiles
"My first single was more of a soul track, and I thought Calvin Harris sounded a bit more racially ambiguous," he said in a 2009 interview with ShortList, according to Digital Spy.
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Brad Pitt
Real name: William Bradley Pitt
The actor might go by his middle name in Hollywood, but it seems he flirts by using his real name. "'Hi, I’m William,'" he reportedly told a woman during a 2018 coffee run, according to Page Six. "She replied, 'Oh, you look like a Bradley.' And he responded, 'Well, that's my middle name,' and smiled and winked at her."
Lorde
Real name: Ella Marija Lani Yelich-O'Connor
The New Zealand singer was always drawn to the name "Lord" but thought the spelling was too masculine. "Ever since I was a little kid, I have been really into royals and aristocracy, so to make 'Lord' more feminine, I just put an 'e' on the end! Some people think it's religious, but it's not," she told Interview Magazine.
Rihanna
Real name: Robyn Rihanna Fenty
She still goes by Robyn with friends and family. "When I hear Robyn, I pay attention," she told Rolling Stone in 2011.
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Lucy Hale
Real name: Karen Lucille Hale
"Karen is my alter ego," the actress joked on The Tonight Show Starring Jimmy Fallon in 2016.
Lady Gaga
Real name: Stefani Joanne Angelina Germanotta
The story behind Lady Gaga's stage name began with an autocorrected text message. In 2006, she met music producer Rob Fusari, who compared her vocals to Queen's Freddie Mercury. He would sing "Radio Ga Ga" whenever she entered the studio, and one day they were texting and his phone autocorrected it to Lady Gaga. She reportedly texted back, "That's it."