Earlier this week news came out that Pippa Middleton was planning on throwing a big, 80s themed birthday party for her sister, Kate Middleton, who turns 30 on Monday. An insider said, "Given the people organizing it, you can be sure it will be brilliant." Prince Harry is apparently helping too. Sources told Grazia magazine that the super-sized party would feature drinks by mixologists Charlie Gilkes and Duncan Sterling and a karaoke machine for the end of the night. The guest list was said to have included the Beckhams.