Project Runway season 4 winner Christian Siriano celebrated his 23rd birthday in NYC last night at a surprise birthday party thrown in his honor at Citrine nightclub. His boyfriend (not fiancée) Brad Walsh orchestrated the happy affair and arraged for Ultragrrrl and The MisShapes to provide the party music. Here are a few pics from the red carpet last night:

I think it’s safe to say that Christian is among the most beloved contestants from Project Runway so I think there are many folks out there who will join me in wishing the fierce designer a Happy Birthday. Siriano has been running around like crazy in the past few months and is even considering a guest appearance on Gossip Girl in the near future (despite the fact that E! claims that he and Walsh are “engaged”, I can assure you that they are not … yet). It’s clear that Christian is showing no signs of slowing down any time soon … and the lad just turned a mere 23 years old! OY! He’s gonna need that youthful spunk because he’s got a long career ahead of him. I hope you had a very Happy Birthday, Christian … I can’t wait to see where you pop up next!!

[Photo credit: Wireimage]