Carrie Underwood Wishes 'Handsome Hunk' Mike Fisher a Happy Birthday: 'He's the Only Fish in the C for Me'

Carrie Underwood only has eyes for her husband, Mike Fisher!
The 34-year-old singer took to Instagram on Monday to wish her hubby a happy 37th birthday --  and share an adorably corny joke.
"Happy birthday to this handsome hunk! I'll never forget the day he told me he was asked to wear the 'C.' I was so proud on that day and I'm even more proud now to see him play in the #StanleyCupFinals," she wrote alongside a photo of Fisher, holding up his captain's jersey for the Nashville Predators. "He's definitely the only FISH in the 'C' for me! ????????."

Underwood is definitely Fisher's biggest fan. See her amazing reaction to finding out her husband was going to the Stanley Cup Finals in the video below.