Joanna Gaines Shares Her Favorite Wedding Day Memory: 'Got in the Limo and Ate!'

Joanna Gaines has many special memories from the day she married husband Chip,

but the one she will always cherish the most came near the very end of the night.

"My favorite moment is when we said goodbye to everybody, got in the limo and ate so much food!"

"My favorite moment is when we said goodbye to everybody, got in the limo and ate so much food!"

The designer and author — who is releasing her first solo memoir, The Stories We Tell: Every Piece of Your Story Matters, Nov. 8 — exchanged vows with Chip, 47, back in 2003 at the Earle Harrison House in Waco, Texas.

"I just remember, when we got there, I saw how good the food looked and I asked my mom, 'No matter what, will you just put some food in a container and put it in the car?' " Joanna recalls.

"So we did our thing, we did our dance, we did all the things that you're supposed to do at a wedding.

And all I kept saying is, I can't wait to be in that car with Chip headed to our honeymoon.

And the second that door shut, I was like, 'Thank God, this is why I'm here. I just wanna be with you and I wanna eat.' "

While it's been nearly two decades since the Fixer Upper stars tied the knot, Joanna, 44, says that memory is still fresh in her mind.

"Weddings are kind of scripted and you're doing a lot," she says. "You can forget why you're really there.

The couple, who share sons Crew, 4, Duke, 14, and Drake, 18, and daughters Emmie Kay, 12, and Ella, 15, recently celebrated their 19th