As much as we appreciate the charms of Netflix on our sofa, wouldn’t you rather watch the Season 3 premiere of “Orange Is the New Black” with a couple hundred fellow fans? What about with 18 of the show’s stars? The Ainsworth in Chelsea is hosting a massive viewing party on Friday night for OITNB, beginning with the episode screening, followed by musical performances by cast members Jackie Cruz (Flaca) and Taryn Manning (Pennsatucky).Other confirmed celebrity guests include 16 other OITNB cast members, including newcomers Ruby Rose and Lori Petty. The party starts at 7:30 p.m. and general admission is $50, which includeshors d’oeuvres, but spring for VIP tickets ($100) to get in half an hour earlier, two hours of open bar (otherwise bring your folding money) and swag bags. Also because proceeds benefit the Women’s Prison Association, which helps former inmatesre-establish their lives.