The new Broadway musical 13 is holding a free teens-only dress rehearsal for the show on Saturday, September 13 at 8pm at the Bernard B. Jacobs Theatre. Teenagers aged 13-18 are invited to sign up at www.13fans.com to get a free ticket (if your request is granted, you'll get a confirmation e-mail by September 10). First come first served, one ticket per teen, and IDs will be checked at the door of the theater. Parents and guardians aren't permitted to attend this all-teen performance of 13, but nearby Planet Hollywood will be offering discounts and priority seating for adults that would like to wait there while the kids enjoy the show (details will be offered at the theater on the night of the dress rehearsal).