The TV presenter, 47, took to Instagram to share some romantic pictures from their day, which took place in Las Vegas.
Posting one of her and Matthew at the Little White Wedding Chapel, Davina gushed: "Just renewed our vows… In Vegas!!!! With the kids… And our mates!!!! Such a blast #togetherforever [sic]."
Davina and Matthew are parents to daughters Holly Willow, 13, Tilly Pippy, 11, and eight-year-old son Chester Micky.
And their children had a sweet role in the day's festivities.
Sharing another snap of Matthew with his arm around her, the former Big Brother presenter said: "The kids wrote our vows… It was funny and more moving than I thought it would be"
It seems Davina is taking a well deserved break. The day after the renewal in Vegas they were in New York, before all heading to Santa Barbara.
Davina and Matthew originally married in June 2000 at Eastnor Castle in Hertfordshire.
Just before they took their vows again, Davina explained they'd hit a 'difficult' patch in their relationship.
She told the Mirror: "Getting through stuff like that makes the next step better."