You might not have heard of Left Handers Day, but it is celebrated annually on 13 August to raise awareness of the struggles with right-handed tools and the "everyday issues that lefties face in world designed for right-handers". To mark the day, here are 20 proud left-handed celebrities.

spike lee
Spike Lee Getty
David Bowie
David Bowie Getty
Whoopi Goldberg
Whoopi Goldberg Getty
Emma Thompson
Emma Thompson Getty
Annie Lennox
Annie Lennox Getty
Oprah Winfrey
Oprah Winfrey Reuters/Suzanne Plunkett
The Simpsons
Matt Groening Getty
Aristotle
Aristotle Getty
Bob Geldof
Bob Geldof Getty
Lewis Carroll
Charles Lutwidge Dodgson, aka Lewis Carroll Getty
Lady Gaga\'s second album Born This Way, had 53,041 copies resold on musicMagpie.co.uk
Lady Gaga Reuters
Prince William
Prince William Getty
Einstein
Albert Einstein Getty
Angelina Jolie 40th birthday
Angelina Jolie REUTERS/Kevork Djansezian
Sarah Jessica Parker
Sarah Jessica Parker Mireya Acierto/Getty Images
Brad Pitt
Brad Pitt Getty Images
Jimi Hendrix
Jimi Hendrix Getty
Robert De Niro
Robert De Niro Reuters
marilyn monroe
Marilyn Monroe Getty
Morgan Freeman
Morgan Freeman Getty