The Come & Get It Singer had her raven-coloured locks elegantly combed back as she sported natural, complimentary make-up on her face finished off with a swipe of red lip.
Selena certainly seemed to be the social butterfly at the event as she was spotted even chatting it up and sharing a few laughs with a few of the costumed characters at the event.
Adam, 48, went casual as usual as he wore a baggy seafoam green T-shirt with athletic trousers and black Adidas sneakers.
Kevin, 50, also dressed comfortably for the occasion as he sported a plain black top, charcoal grey trousers, grey high-top basketball sneakers and a black cap.
Fran Drescher who also utilized her vocal talents in the film was also in attendance as she rocked a black strapless mini dress.