Tina Fey
The comedian and actress revealed to David Letterman that she didn't lose her virginity until she was 24. She waited until she married her husband, Jeff Richmond. Letterman had been reading off a list of other celebrities who waited, and when he got to hers, she said "I couldn't give it away. That's just good, Christian values. Or, being homely."
Lisa Kudrow
The Friends star waited until she married her husband, Michael Stern, in 1995. In an interview, she said, "I don't know if you'd characterize me as uptight, but I understood what it is to be so afraid of sex—of your sexuality. For me it was just, 'No, I'm saving myself because I have to make myself worthy of the kind of man I have in mind.'"