The actress picked her favourite photos of Mark and created a sweet Instagram collage, reminiscing on some of their best memories.
A couple of snaps from Mark and Michelle's wedding, which was covered exclusively by HELLO! in 2015, featured. One showed the TV stars having the time of their lives on the dance floor, while another showed Mark and Michelle at the altar.
Michelle said she was "lucky enough" to call Mark her best friend
Their glam nights out, fun-filled sunny holidays and pet pooches also starred in the collage. Couple goals!
"Happy 30th birthday to the other half of me. @wrighty_ not only my husband but lucky enough to call my best friend," Michelle, 29, wrote.
The lovebirds are spending Mark's big day in Florida and it looks like the celebrations got off to an early start. Alongside a photo of the couple sipping on cocktails and enjoying their date night, Mark wrote: "Tipsy, Pre birthday celebrations last night."
The radio presenter had no qualms about ringing in the big 3-0. He reflected on the past few years in another Instagram snap and wrote: "Just watched the sun go down for the last ever time in my 20s. Let's see what this next decade has to offer. Anything like the last will do fine."
The couple enjoyed some pre-birthday cocktails
Mark and Michelle have been in Florida to film the former TOWIE star's new TV show, although no details of his latest project have been revealed.
Meanwhile, Michelle has been receiving rave reviews for her starring role in ITV drama Tina and Bobby. The ex Corrie actress, who portrays former England captain Bobby Moore's wife Tina in the biopic, was even praised by her husband, who proudly tweeted: "She's just special #Tina&Bobby #wow #loveit."