We hope Louis sent him a bunch of roses and a box of chocolates...

It's the most rude, obnoxious and funniest X Factor judge's birthday. Yes, Simon Cowell has turned 50!!

That's a pretty big mark to hit, and last night he went out to celebrate, along with Cheryl Cole, Dannii Minogue, Jordan, Louis Walsh, Kate Moss and many other huge stars. Even the 'Hoff made it!

Apparently Simon was everywhere, his name was even spelt out in the soup and his photo was projected on a wall outside the mansion where the party took place. Vain much, Simon? Sadly the only pic we could find of him at his party is this one of him in the car on his way...

In celebration of our favourite bad guy, we've got one of the funniest auditions ever on X Factor. It's an oldie, but Simon accusing this girl of being Vikki Pollard is HILARIOUS in true Cowell fashion...

Happy birthday Simon!

Do you wish you could have gone to the big bash? Are you a fan of Simon or do you just think his tongue-in-cheek comments are out of line? Comments please!