27 Celebrities Who Turn 40 In 2024, Because, Well, That's Just How Time Works

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One thing about me is that I am extremely fascinated by celebrity birthdays and ages. And just out of plain curiosity, I wondered, which famous people are about to turn 40 in 2024?

And just in case you wanted to feel old today, lemme tell you:

1.Katy Perry

Katy Perry

Birthday: Oct. 25

Where you know her from: She's a singer best known for her hits like "Teenage Dream," "California Gurls," "I Kissed a Girl," "Hot n Cold," "Firework," and "Last Friday Night." She's also a judge on American Idol.

Stewart Cook / ABC via Getty Images

2.Prince Harry

Prince Harry

Birthday: Sept. 15

Where you know him from: He's, well, Prince Harry.

Karwai Tang / WireImage

3.Avril Lavigne

Avril Lavigne

Birthday: Sept. 27

Where you know her from: She's a singer-songwriter and one of the most influential artists during the '00s pop punk era. Her hits include "Sk8er Boi," "Girlfriend," and "Complicated."

Mathew Tsang / WireImage

4.T-Pain

T-Pain

5.Mark Zuckerberg

Mark Zuckerberg

Birthday: May 14

Where you know him from: He created Facebook.

Picture Alliance / dpa/picture alliance via Getty Images

6.Mandy Moore

Mandy Moore

7.Kid Cudi

Kid Cudy

Birthday: Jan. 30

Where you know him from: He's a rapper and an actor. He's widely known for his smash hits "Day 'n' Nite" and "Pursuit of Happiness." He has also starred in movies like X, Don't Look Up, and Silent Night.

Kevin Winter / Getty Images

8.Calvin Harris

Calvin Harris

Birthday: Jan. 17

Where you know him from: He's a DJ and record producer best known for hit songs like "This Is What You Came For ft. Rihanna," "Summer," "Feel So Close," and "One Kiss."

Joe Maher / Getty Images

9.Olivia Wilde

Olivia Wilde

Birthday: March 10

Where you know her from: She's an actor and director best known for her movies Don't Worry Darling and Booksmart. She also starred in projects like House, Tron: Legacy, The Lazarus Effect, and more.

Michael Tran / AFP via Getty Images

10.Gina Rodriguez

Gina Rodriguez

Birthday: July 30

Where you know her from: She starred on Jane the Virgin and currently stars on Not Dead Yet. She's also best known from her performances in movies like Someone Great, Miss Bala, and Spy Kids: Armageddon.

Arturo Holmes / WireImage

11.Aubrey Plaza

Aubrey Plaza

Birthday: June 26

Where you know her from: She's an actor best known for her performances in shows and movies like Parks and Recreation, The White Lotus, Scott Pilgrim vs. the World, Legion, Happiest Season, Ingrid Goes West, Emily the Criminal, and more.

Jamie Mccarthy / Getty Images

12.Noel Fisher

Noel Fisher

Birthday: March 13

Where you know him from: He's best known for playing Mickey Milkovich on Shameless. He also played Vladimir in The Twilight Saga: Breaking Dawn — Part 2.

Michael Bezjian / Getty Images for The Art of Elysium

13.America Ferrera

America Ferrera

14.Jack Antonoff

Jack Antonoff

15.Patrick Stump

Patrick Stump

Birthday: April 27

Where you know him from: He's the lead singer of Fall Out Boy.

Rich Polk / Getty Images for iHeartRadio

16.Trevor Noah

Trevor Noah

Birthday: Feb. 20

Where you know him from: He's a comedian, and he hosted The Daily Show from 2015–2022. He's also been nominated for 11 Emmy Awards.

Matt Winkelmeyer / Getty Images

17.Kelly Osbourne

Kelly Osbourne

18.Scarlett Johansson

Scarlett Johansson

19.Fantasia Barrino

Fantasia Barrino

Birthday: June 30

Where you know her from: She was the Season 3 winner of American Idol. She's a successful Grammy Award-winning R&B singer, and stars in the movie adaptation of The Color Purple.

Kevin Winter / Getty Images

20.Paul Dano

Paul Dano

Birthday: June 19

Where you know him from: He's an actor best known for his roles in The Batman, There Will Be Blood, Little Miss Sunshine, The Fabelmans, 12 Years a Slave, and more.

Mike Coppola / Getty Images

21.Lauren London

Lauren London

22.Ashlee Simpson

Ashlee Simpson

Birthday: Oct. 3

Where you know her from: She's an actor and singer best known for her breakout single "Pieces of Me." She's also Jessica Simpson's younger sister.

Lester Cohen / Getty Images for JBL

23.Cecily Strong

Cecily Strong

Birthday: Feb. 8

Where you know her from: She starred on Saturday Night Live from 2012–2022.

Steven Ferdman / Getty Images

24.Christy Carlson Romano

Christy Carlson Romano

Birthday: March 20

Where you know her from: She's best known for playing Ren Stevens on Even Stevens and for voicing Kim Possible. She also hosts the Vulnerable podcast where she interviews former child stars.

Hubert Vestil / Getty Images

25.Jackson Rathbone

Jackson Rathbone

Birthday: Dec. 14

Where you know him from: He best known for playing Jasper Hale in the Twilight movies.

Michael Kovac / Getty Images for The Creative Coalition

26.Chris Lowell

Chris Lowell

Birthday: Oct. 17

Where you know him from: He's an actor best known for his roles in Veronica Mars, Private Practice, How I Met Your Father, Promising Young Woman, GLOW, The Help, and more.

Emma Mcintyre / Getty Images

27.Jena Malone

Jena Malone