The 42-year-old model took to his Instagram account on Saturday to share the exciting news.
“2020 wasn’t all bad… she said yes 💎 #mrssmith,” he wrote.
In the image the hunk is seen down on one knee as he popped the question in what appears to be the couple’s backyard.
After saying ‘Yes’ the couple shared a sweet kiss, and shared the moment on their social media channels.
Sarah, wearing an off-the-shoulder white crop top and matching pants, looked truly emotional in the images.
The couple have two children – little Frankie and another daughter, Mila Elle, who turned two earlier this month.