Tina knowles & Beyonce R&B superstar Beyonce is celebrating her first mother's day with daughter Blue ivy carter by penning an open letter to her mother Tina knowles. The singer wrote the letter on her website. read below. Dear Mama Evertyhing I am is Because of You! 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 soo 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. Happy Happy Mama's Day.