Simon Cowell’s Little 51st Birthday Surprise (PHOTOS)

Simon Cowell is having a little bit of fun on his birthday.

The former American Idol judge, who turns 51 today, turned up at the London studio of his soon-to-be-imported show The X Factor on Thursday to discover quite the unusual birthday present: A musical trio of little people, who serenaded the birthday boy while wearing T-shirts that read, “Happy Birthday, Love Cheryl”—aka, his fellow X Factor judge Cheryl Cole.

Can’t help but wonder if the famously cantankerous Cowell told the group that their performance was solid, but showed room for growth.

Check out the whole spectacle in our photo gallery. And make sure to hit up Paparazzi-Razzi for more pics of famous people doing fabulous things.