Entertainment Tonight was given exclusive access to Britney's top-secret rehearsal studio as she prepares for the upcoming Femme Fatale Tour, which kicks off next week! She discusses the grueling schedule and is as adorable as a teddy bear drinking sweet tea as she dishes on some of her tour must-haves. Brit Brit works so darn hard, and it's all for us! Can't WAIT to see her this summer. Check out Part One of the interview, below! Tune in to Part Two tomorrow on Entertainment Tonight at 7:30pm EST.