A woman, getting married for the fourth time, goes to a bridal shop and asks for a white dress.

"You can't wear white.", reminds the sales clerk, "You've been married three times already."

"Of course I can, I'm a virgin!", says the bride. "Impossible", says the sales clerk.

"Unfortunately not", the bride explained. "My first husband was a psychologist. All he wanted to do was talk about it. My second husband was a gynaecologist. All he wanted to do was look at it. My third husband was a stamp collector.... God how I miss him"