Gibson returns to at Cinderella July 24, 2001
Thanks to Dan for this information!

from Gibson's official site:

It's official: Deborah Gibson will be rejoining the cast of 
Cinderella for the last three weeks of the National Touring 
Company.  The shows will be in the following cities:

   *** Houston, TX - July 24 - July 29 at the Brown Theater
   (Originally Jones Hall but due to flooding, the show has been 
moved to Brown Theater) ***

   Performance times are:
   - Tuesday - Saturday at 8:00pm
   - Saturday & Sunday matinee at 2:00pm
   - Sunday at 7:30pm.

   *** Denver, CO - July 31 - August 12 at the Buell Auditorium
   (part of the Denver Center for the Performing Arts) ***

   Performance times are:
   - Tuesday - Sunday at 8:00pm
   - Saturday & Sunday matinee at 2:00pm (for the first week of 
the two week run)
   - The second week will have a Thursday matinee at 2:00pm, but 
no Sunday evening performance.