Simon Cowell Pitches a Massive Birthday Tent

10/3/2009 8:10 AM PDT
THIS ... is what "American Idol" money can do for your 50th birthday party.

Simon Cowell is hitting the half-century mark with a lavish party at Wrotham Park in Hertfordshire, England today -- a swanky private mansion where people with money throw swanky private parties.

How can judging people be wrong ... if you can make so much money doing it?