Jessica Alba is a doting mother to three children, and she melted the hearts of her Instagram followers after sharing an adorable picture of her youngest.MORE: Jessica Alba swears by this spring-perfect brand – and it just launched on NordstromIn the sweet snap, Jessica shared a photo of Hayes, aged three, whose face was covered with the remnants of a blueberry smoothie."What blueberry smoothie, mom?" the Fantastic Four star joked in the caption.WATCH: Jessica Alba cleans her home in hilarious