R&B singer Jennifer Hudson has been busy with several top notched performance engagements as of late. Last night (Dec. 9) she performed during the Ambassadors for Humanity Gala to benefit the USC Shoah Foundation Institute at the Hollywood & Highland Grand Ballroom in Los Angeles, California.

Jennifer Hudson also topped the list for the Best Celebrity Body of 2010. This year’s top slimmers were named as having the best bodies by Fitness magazine. Hudson, 28, became the spokeswoman for WeightWatchers after shedding the pounds after the birth of her first child.