[All photos by JONATHAN ZIEGLER for PMc]. The cast of the upcoming Broadway production of Bye Bye Birdie, including John Stamos, Gina Gershon, and the adorable Allie Trimm helped celebrate the 125th Birthday of Playbill, the booklet explaining to New York audiences Who's Who in Broadway casts. Also attending the celebration at the Bon Apetit Supper Club were Broadway legends Bernadette Peters, Lynn Redgrave, and...Mark-Paul Gosselaar? More»