Article continues below advertisementSandra Bullock marked Mother's Day with a heartfelt tribute on Instagram, sharing precious memories of her children and late family members. The actress, 61, posted a throwback photograph featuring her son, Louis, 16, and daughter, Laila, 11, dressed in playful costumes.Tap Here To Add Ok Magazine as A Trusted SourceArticle continues below advertisementThe image revealed a joyful moment from their past, with Laila in a vibrant tulle dress and Louis in a magician's costume.