I truly cannot even fathom Prince Harry, Mark Zuckerberg, and Avril Lavigne being the same age.

One thing about me is that I am extremely fascinated by celebrity birthdays and ages.

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I truly cannot even fathom Prince Harry, Mark Zuckerberg, and Avril Lavigne being the same age.

Katy Perry

Prince Harry

Avril Lavigne

T-Pain

Mark Zuckerberg

Mandy Moore

Kid Cudy

Calvin Harris

Olivia Wilde

Gina Rodriguez

Aubrey Plaza

Noel Fisher

America Ferrera

Jack Antonoff

Patrick Stump

Trevor Noah

Kelly Osbourne

Scarlett Johansson

Fantasia Barrino

Paul Dano

Lauren London

Ashlee Simpson

Cecily Strong

Christy Carlson Romano

Jackson Rathbone

Chris Lowell

Jena Malone