Popstar Beyonce wowed a sold-out crowd at the new Revel Resort in Atlantic City, New Jersey, on Friday for her first live concert since giving birth to daughter Blue Ivy in January.

On Saturday, President Barack Obama's wife Michelle and daughters Sasha and Malia went to see Beyonce's show. The crowd gave the family a warm welcome as the trio found their seats at the concert venue.

A source 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 started her show with the song "End of Time" and later sang "Party," "Get Me Bodied," "Crazy In Love" and "Love On Top," which the two young Obama girls sang along to.
 
Earlier this year, Beyonce wrote a hand-written letter to Obama, praising her role model status. She also backed the first lady's anti-childhood obesity campaign, Let's Move!