Mabel Elizabeth King (née Washington; December 25, 1932 - November 9, 1999) was an American actress and singer. She is known for her role as Mabel "Mama" Thomas on the ABC sitcom What's Happening!!

Mabel, the sister-in-law of King Willem-Alexander, is the former CEO of the Elders, an organization that Carter belonged to. In a tribute to Carter posted on Instagram, Princess Mabel wrote ...

Mabel has released the brand single, "All Over You", featuring Ghanaian artist King Promise.

Following a surprise performance together at King Promise's headline London show last month, Mabel has released the infectious new single 'All Over You.' Listen to it now.