Michelle Obama strayed from her tried and true designer rotation in the latest episode of her podcast, “IMO,” featuring Serena Williams .

The former first lady — known for being an avid fan of Carolina Herrera, Michael Kors, Prabal Gurung and Jason Wu — donned a black viscose dress by Celine , embellished with a trail of gold buttons down the skirt. Online, the ready-to-wear design, priced at $6,600, is pictured with a halterneck. However, Obama is seen wearing the dress tank top style.

Michelle Obama filming the latest episode of her podcast, “IMO,” with Serena Williams . Ashley Osborn

Alongside her, Williams wore a chunky white cardigan layered over a steel blue draped minidress, cinched by a thin belt in the middle. The legendary tennis star’s blond braids were pulled off her face and fastened in rose buns on top of her head.…