Michelle Obama brings the moves and teaches Tina Knowles the "Boots on the Ground" line dance

Michelle Obama is in her entertainment and dancing era. While promoting her new memoir on the nine-city book tour, Matriarch, she joined Tina Knowles-yes, Beyoncé's mom-for a special chat in D.C. But it wasn't just talk. Michelle surprised the crowd with a dance that stole the show and had everyone clapping along. Getty Michelle Obama showed off her dance moves alongside Tina Knowles It all went down at the MGM National Harbor for "Matriarch: An Evening with Tina Knowles, Family and Friends," on April 30, and the evening ended with them dancing to "Boots on the Ground" by 803Fresh. . . .