Meet the women who helped raise Hollywood's hottest stars
"Everything I am is because of you!" Beyonce wrote in a touching 2012 Mother's Day tribute to Tina Knowles, the grandmother of Beyonce's daughter, Blue Ivy. "You are the first voice that ever sang to me. At every turn you push me to be better. You teach me to be true to myself and the ones I love. When I look into your eyes, I am sooo proud. Now that I'm a mother, I truly realize all the sacrifices you made for us. My love for you goes beyond what I can say."