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 LeeGetty
David Bowie
David BowieGetty
Whoopi Goldberg
Whoopi GoldbergGetty
Emma Thompson
Emma ThompsonGetty
Annie Lennox
Annie LennoxGetty
Oprah Winfrey
Oprah WinfreyReuters/Suzanne Plunkett
The Simpsons
Matt GroeningGetty
Aristotle
AristotleGetty
Bob Geldof
Bob GeldofGetty
Lewis Carroll
Charles Lutwidge Dodgson, aka Lewis CarrollGetty
Lady Gaga's second album Born This Way, had 53,041 copies resold on musicMagpie.co.uk
Lady GagaReuters
Prince William
Prince WilliamGetty
Einstein
Albert EinsteinGetty
Angelina Jolie 40th birthday
Angelina JolieReuters/Kevork Djansezian
Sarah Jessica Parker
Sarah Jessica ParkerMireya Acierto/Getty
Brad Pitt
Brad PittGetty
Jimi Hendrix
Jimi HendrixGetty
Robert De Niro
Robert De NiroReuters
marilyn monroe
Marilyn MonroeGetty
Morgan Freeman
Morgan FreemanGetty