As Beyoncé celebrates her first Mother’s Day with daughter Blue Ivy Carter, she honors the woman who helped make her who she is today. The superstar singer has written an open letter to her mama Tina Knowles on her website, thanking her for being a positive role model and for all the sacrifices she made along the way.

“My love for you goes beyond what I can say,” writes B in the handwritten note. Read her touching tribute below.