Michelle Obama joined 5,500 fans at a Beyonce concert in Atlantic City, New Jersey this weekend, according to the Associated Press.
The first lady was with daughters Sasha and Malia at Revel Resorts, where Beyonce performed two dozen songs Saturday night.
President Barack Obama did not attend but New Jersey's Governor Chris Christie did, the AP wrote.
Obama and the singer have been exchanging letters in recent months, with each calling the other a role model for girls, according to MTV. The music television station said Obama wore a sleeveless green sheath and sat in the balcony in Ovation Hall.
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Michelle Obama and the girls appeared excited throughout the concert, cheering for Beyonce. Beyonce sang hits like "Crazy In Love," "Get Me Bodied" and "Party."
It is her first concert since giving birth in January to daughter Blue Ivy.
"Y'all don't know how hard I had to work," Beyonce she told the audience. "I had to lose 60 pounds. They had me on the treadmill, eating lettuce."
Beyonce also paid tributes to Whitney Houston with a rendition of "I Will Always Love You" and a shout-out to Donna Summer's hit "Love to Love You Baby" during "Naughty Girl."