"@jennaldewan I'm not sure if this woman is my Rainbow or my pot of gold but I'm lucky either way happy birthday cake baby!" he wrote alongside a cute snap of the couple.
Touched by all the birthday love, Jenna also took to Instagram to thank fans for their messages.
"Kisses for all of you!! THANK YOU for my happy birthday wishes!!!!" she wrote. "I can't possibly thank you all individually, but please know I love you all and words can't explain how grateful I am for your love and support always❤❤."
With a successful career, a thoughtful husband like Channing, and a healthy 3-year-old daughter, Everly, Jenna definitely has a lot to be thankful for.
"Having a job and being married and having a crazy busy life, I try and balance as much as I can," she revealed earlier this year during a photoshoot for Danskin. "I do the best I can."
"Some days I'm not that great at it, some days I'm better, but I have found -- and it's so true, a lot of people will say that -- that over time, you really have to take time for yourself, and it's the hardest thing for me to do because I [think], 'There's so many other things I should be doing, there's other people to be taking care of,'" she added.