Los Angeles - Beyoncé Knowles wants to get "chocolate wasted" after successfully shedding her baby weight.
The Run the World (Girls) singer has been on a diet and exercise regime since giving birth to Blue Ivy - her first daughter with husband Jay-Z - in January and is now looking forward to tucking into some calorific treats.
Addressing her fans on Saturday 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!"
'Best performer in the world'
Beyoncé 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 Beyoncé told the crowd to get up and jump, [Malia and Sasha] stood and started dancing and jumping.
"They were shouting when Beyoncé asked, 'Do girls run the world?' Together, all three of them did the Single Ladies dance moves."
Beyoncé'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".