A celebration is in order for Joanna Gaines!

Joanna and Chip Gaines
Credit: Instagram @JoannaGaines

Today marks the Fixer Upper beauty's 39th birthday and—like the rest of us—her husband thinks she's just perfect.

"Jo, you are the best at everything you do," Chip wrote alongside a photo of his renovation queen on Instagram.

"Watching you do your thing is one of my greatest joys," he continued. "You are fascinating in every way, and like the rest of the world... I can't wait to see what's next. Happy birthday, young lady! -me"

The Gaines, who have been married for 14 years and share four children, recently sat down with I am Second to talk about what makes their relationship work so well, despite their differences.

"If I didn't have Chip Gaines in my life I'd still be dreaming in my head, but not acting out on any of that—not living it out," Joanna tells the camera in the heartfelt clip. "You pushed me. You pushed me out of my comfort zone."

Chip agrees that they bring the best out in each other, in more ways than one.

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"I think that's one of the reasons that I love her like I do. I feel like she knows me in a way that has caused me to stop acting. I feel like I've really been an actor—a character—my whole life," he explains. "I've always been trying to prove something to someone. When I caught her, I finally felt content for the first time in my life. I felt like I could be exactly who I was."