Calvin Klein's Boyfriend's Birthday Party Was a Star-Studded Affair 26.20K Brian Moylan 02/01/11 04:33PM Filed to: Parties Parties Calvin Klein Nick gruber Anna Wintour Michael Musto Donna Karan Alec Baldwin Daphne Guinness Tweetg Calvin Klein's porn star boyfriend's 21st birthday bash took place last week, but Michael Musto got his hands on some photos. Donna Karan, Anna Wintour, Alec Baldwin, and Daphne Guinness all stopped by. They must really love Calvin!