Reese Witherspoon has thanked her “amazing” mother for always supporting her as she marked her birthday. The ‘Walk the Line’ actress, 48, posted a snap of her grinning beside her beaming mum Betty on Sunday (18.08.24) on her Instagram, alongside a gushing tribute. She said in a caption: “Happy birthday to the most amazing Mama in the world! “You bring so much sunshine into my life. (Star emojis.) Thank you for always believing in me and cheering me on. I love you! (Pink heart emoji.)” The actress shared shots of her and Betty taken at restaurants on two different occasions – with the star spor…