I can’t with Vanessa Hudgens’s ‘70s-inspired holiday glam, and I mean that in the nicest way possible. The Tick Tick Boom actor’s shoulder-length feathered hair and the sparkly eye shadow are the perfect pairing in channeling all things ’70s beauty decadence. Hudgens shared photos of her disco-fever throwback glam via Instagram. She channeled Bianca Jagger with…