Next Monday, Rupert Murdoch is planning a big bash for wife Wendi Deng Murdoch's 40th birthday on the Gramercy Park Hotel roof that has a six-figure budget and folks like Nicole Kidman and Barry Diller on the guest list. It's such a big deal that Murdoch made Michael Wolff (hey, did you hear he has a book coming out?) move his party for The Man Who Owns the News to Tuesday, according to Jeff Bercovici. They both sound like fabulous affairs. Especially compared to the staff Christmas party that the New York Post announced yesterday. News Corp. canceled its regular company-wide holiday bash last month. So, instead next Friday the staff are heading to their regular Midtown watering hole, Langan's. With a cash bar. Aside from the promised "sexy elves" and "special theme rooms," it'd be tough to tell this from any other Friday night at Langan's. Full invite after the jump.