Create a Pixar-style animated family portrait featuring a mother with three youn

Create a Pixar-style animated family portrait featuring a mother with three young children. The mother has long, wavy dark hair, wears glasses, a white sleeveless top, and blue jeans. She is holding a baby boy in her arms, who is wearing a white shirt and dark blue shorts, smiling warmly. The two older children, a boy and a girl, are sitting on the floor in front of them. The boy has short hair, glasses, and is dressed in a white shirt and blue jeans, with a cheerful expression. The girl has shoulder-length hair with a bow, wearing a white shirt with ruffled sleeves and a denim skirt, smiling softly. The background is a soft, neutral tone with large decorative letters spelling 'ONE' placed behind the children. The entire scene should have the vibrant colors, expressive faces, and warm lighting typical of Pixar animation.