Christina Aguilera performed at the “Thisday Africa Rising” Festival at the Royal Albert Hall in London. This is an awareness campaign to promote Africa for investment and not charity. Aguilera looked super fit, trim and sexy in her dandy costume. Her bustier was almost like a blouse and was relatively modest. Barely 10 months ago, Aguilera gave birth to her firstborn, Max. Aguilera had been quietly slimming and rehearsing to get back into the mode of a performing artiste.