"Best 2K I Ever Spent" Calvin Klein's Boyfriend Celebrates Being Able To Drink Legally

Take a look at Calvin Klein's big birthday bash for his boyfriend, former porn star Nick Gruber.  The 68-year-old designer spared no expense for his loved one's 21st, shutting down Indochine for the affair and stocking the space with 4,500 balloons (4,500!!!), glittering streamers, 100 models and a cake with 21 sparklers on top. Just look at how excited Nick looks to dig in!

[Photos via Michael Musto for VillageVoice]

Plenty of celebs came out to toast the b-day boy including Anna Wintour, Donna Karan, and Vera Wang, even Alec Baldwin stopped by.

[Nick Gruber, Calvin Klein, Donna Karan]

[Anna Wintour, Olivier Theyskens]

[Calvin Klein, Nick Gruber]

[Alec Baldwin]