Tyra Banks shared an incredible insight into her family life on social media over the weekend, sharing a heartfelt post featuring her four-year-old son York.The supermodel took to Instagram to share a beautiful picture of a rainbow that the little boy had drawn.MORE: DWTS star Jesse Metlcafe talks 'undeniable chemistry' with dance partner Sharna BurgessIn the image, York's hands were seen holding his artwork, which also featured his name written out in yellow pen. VIDEO: Tyra Banks opens up