News TickerJoan Rivers Postpones Her 80th Birthday Party, Mourns Loss of Her SisterNews TickerJune 5, 2013 at 4:36 PMLink CopiedRead full articleJoan Rivers Postpones Her 80th Birthday Party, Mourns Loss of Her Sister"Fashion Police" host Joan Rivers postpones her 80th birthday party as she mourns the loss of her sister, Barbara Cushman Waxler, who died this week. View comments