Rihanna is set to guest host Z100’s Jingle Ball 2008, set for Friday, December 12 at Madison Square Garden in New York. Tickets for the event which features performances by Katy Perry, Chris Brown, Leona Lewis, Ne-Yo, Jesse McCartney, Paramore, David Archuleta, Brandy and Lady Gaga go on sale exclusively to ZVIP members via Ticketmaster on November 10. You can register to be a ZVIP member for free at www.z100.com, keyword: ZVIP. Extra tickets will be available to the public the next day. For each ticket sold via Ticketmaster, $1 will automatically be donated to Stand Up to Cancer, the event’s official charity partner.