The supermodel took to Instagram on Monday to share a throwback snap of her cradling her blossoming baby bump on the show's iconic runway. In the photograph, Heidi donned a bump-skimming black ...

April 12, 2017: Heidi Montag and Spencer Pratt announce they're expecting their first baby In 2017 ... a sweet snap of Gunner cradling his mom's bump. "My heart is overflowing with joy!