Beyonce :: Returns on Stage Performance

Beyonce kicked off her first concert series in more than nine months in Atlantic City, New Jersey. The concerts called "Beyonce Back to Business" are her first live performances since the birth of her daughter, Blue Ivy Carter in January. The 'Run the World (Girls)' singer has been on a diet and exercise regime since giving birth to her first daughter with husband Jay-Z. She is now looking forward to tucking into some calorie-filled treats. Addressing her fans on Saturday night during her concert at Revel Beach's Ovation Hall in Atlantic City, Beyonce exclaimed: 'Y'all have no idea how hard I worked! I had to lose 60 pounds. They had me on that treadmill. I ate lettuce! Now tonight I'm gonna get chocolate wasted!' Beyonce performed to a star-studded crowd which included US First Lady Michelle Obama and her young daughters Malia, 13, and 10-year-old Sasha, and the trio, along with broadcaster Gayle King, appeared to be enjoying the singer's performance.

  A fellow concert-goer told UsMagazine.com: 'They sat up in a private balcony with Gayle King. Michelle was jamming out to 'Crazy In Love'. When Beyonce told the crowd to get up and jump, Malia and Sasha stood and started dancing and jumping. 'They were shouting when Beyonce asked, 'Do girls run the world?' Together, all three of them did the 'Single Ladies' dance moves'. Beyonce's husband Jay-Z was also in the audience and was incredibly proud of his spouse at her first live show since August 2011. He tweeted: 'I'm gonna say this and then I'm gonna end mine. BEYONCE is the best performer in the world. Period'.

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