Sandra Bullock shared an adorable photo of her two kids while celebrating Mother’s Day. The actress, 61, posted a rare throwback of her son Louis, 16, and daughter Laila, 11, on Instagram Sunday. The much younger version of her kids sported cute costumes as she snuggled up to them, with Laila rocking a colorful tulle dress, and Louis sporting a magician get-up. In her heartwarming carousel, Bullock also shared snaps of her late grandmother and her late mother, Helga Meyer. In the childhood photo with Meyer, both the actress and her younger sister, Gesine Bullock-Prado, cuddled up to their mom. Sandra Bullock shared heartwarming throwback pics on Mother’s Day Sunday, including a rare photo of her two kids — son Louis and daughter Laila — as well as a childhood photo of her and her sister with their late mom, Helga Meyer (pictured here). Instagram/sandrabullock She also included a pic with her late grandma. Instagram/sandrabullock “To all the mamas, No matter how you came to be,” she wrote.…