Justin Bieber. (Photo: Instagram, @justinbieber)
David Bowie (RIP). (Photo: Instagram, @davidbowie)
Prince William. (Photo: Instagram, @officialprincewilliam)
Robert De Niro. (Photo: Instagram, @francoisberthier)
Niall Horan. (Photo: Instagram, @niallhoran)
Paul McCartney. (Photo: Instagram, @paulmccartney)
Demi Moore. (Photo: Instagram, @_demimoore)
Oprah Winfrey. (Photo: Instagram, @oprah)
Angelina Jolie. (Photo: Instagram, @angelinajolieofficial)
Barack Obama. (Photo: Instagram, @barackobama)
Tom Cruise. (Photo: Instagram, @tomcruiseofficial_)
Lady Gaga. (Photo: Instagram, @ladygaga)
Bill Gates. (Photo: Instagram, @billgates19)
Robert Redford. (Photo: Instagram, @robert_redford_obsessed)
Sarah Jessica Parker. (Photo: Instagram, @sarahjessicaparker)
Keanu Reeves. (Photo: Instagram, @keanurlove)
Jerry Seinfeld. (Photo: Instagram, @jerryseinfeld)
Nicole Kidman. (Photo: Instagram, @nicole_kidman_oficial)
Eminem. (Photo: Instagram, @eminem)
Seth Rogan. (Photo: Instagram, @dear_blackbird_boutique)
Jim Carrey. (Photo: Instagram, @jimcarrey__)
Bill Clinton. (Photo: Instagram, @bill_.clinton)
Julia Roberts. (Photo: Instagram, @juliarobertsoriginal)
David Letterman. (Photo: Instagram, @letterman)
Mary-Kate Olsen. (Photo: Instagram, @marykateolsen__)
Owen Wilson. (Photo: Instagram, @_owenwilson)
Bruce Willis. (Photo: Instagram, @brucewillisbw)
Morgan Freeman. (Photo: Instagram, @morgan_freeman_oficial)
Diane Keaton. (Photo: Instagram, @dianekeaton.official)
Jon Stewart. (Photo: Instagram, @usweekly)
We all know the often-cited claims that lefties are smarter and better at art than right-handed people, but how can we prove it? Maybe this list of 30 celebrity southpaws can be used as evidence…some to the contrary.