The 38-year-old actress - who has two children, Apple and Moses, with husband Chris Martin - admitted she was struggling to keep her emotions in check.
"I'm proud my grandchildren can one day come and see my name on the sidewalk," contactmusic.com quoted her as saying.
"I think I am going to get in the car and burst into tears. It just means so much to me to see all the people that I really love, and who have been supportive of me forever.
I feel so honoured I can't believe it."
"This city is so much a part of my heart and soul. I don't think I would be here were it not for my family and friends," she said.
