"Happy Birthday to my MAN!" Rimes posted to her Instagram on Thursday, along with a sweet snap and a whole lot of hashtags. "#chilternfirehouse #london #myman #hubby #happybirthday #love #sexy," the 33-year-old singer added, before concluding with a solid "I love you so much!!"
The couple recently returned to L.A. after a brief stint in London -- on Monday, Cibrian's wife announced she signed a new record deal with RCA Label Group UK to release her 16th album, and is set to tour across the U.S. this summer.
"What a week!" Rimes posted to her Instagram on Friday, along with a little video celebrating her time across the pond. "Love you UK See you soon."
Cibrian and Rimes have been around the world lately, celebrating their anniversary in Mexico in April. While the couple's marriage has been going strong for five years and counting, Rimes recently revealed they actually met almost 20 years ago, when she was just 14 years old -- and has the picture to prove it! See more in the video below.