Joan Collins stunned in a black outfit and jewels while she was at an event. Admirers who saw media of the star complimented Collins, who they called “the epitome of absolute glamour and beauty.” Yesterday, Hollywood star Dame Joan Collins, 90, stepped out to attend her book launch event, dressed to the nines. The fabulous actress, whose guest list included fellow friends in the industry and family, wore a black off-the-shoulders ensemble and paired her sleek look with extravagant jewelry. Alongside her was her doting husband, Percy Gibson, who wore a dapper dark blue suit. Collins posted a pi…