http://aire.ncl.ac.uk/Humour/supermodels.text reports:

(*) Pia Zadora, for those who don't know, is a soft-porn calendar girl with an IQ very slightly higher than pondweed, who married an Israeli millionaire. Her loving husband has catered to her insatiable appetite for fame by buying her two films and a play, every single one of which has flopped disastrously, largely thanks to the efforts of Ms Zadora. Allegedly, her performance as Anne Frank was so atrocious that when the Gestapo were searching the house, members of the audience used to shout out "She's in the attic!"

Note: People have been quick to point out that this is a rumor and nothing more. Actually, it's an urban legend attributed to many actresses over the years. More can be found at the Urban Legends Reference site.