Big Brother cast/ courtesy of CBS

Those interested in joining the next season of CBS's "Big Brother" will get an extra bonus this weekend: A chance to meet a former player.

Janelle Pierzine, a "Big Brother" All Star, will be at the Mall of America Rotunda Saturday to sign autographs and share war stories from her time on the hit summer show.

The open audition casting call wil take place from 1-4 p.m. Saturday. Those who want to be on the show--and vie for $500,000 cash prize, must be willing to have themseves filmed 24 hours a day, seven days a week.