The Bachelorette couple Kaitlyn Bristowe and Shawn Booth certainly have a reason to celebrate.

Kaitlyn, 31, and Shawn, 29, both took to Instagram on Thursday and posted cute photos of each other to pay tribute to their two-year anniversary and reminisce about the precious time they've spent together.

The couple got engaged on May 4, 2015, and the big moment aired on The Bachelorette's Season 11 finale on July 28 of that same year.

"Cheers to the longest engagement ever," Kaitlyn captioned a photo of the sun-kissed pair toasting fruity mixed drinks while smiling ear to ear.

"I like that we don't feel pressure, I like that we have taken our time, I like that we still don't have a date set, and I kind of like you. Best 2 years ever. Happy Anniversary Shawn B. I love you! Swipe for a couple oldie pics that make me smile. We look like babies."

Kaitlyn then provided fans with a brief slideshow of throwback photos, including one of the couple hugging the night The Bachelorette finale was filmed.

As for Shawn, he shared a modeling photo of Kaitlyn rocking denim shorts and a black top with the following caption: "I am one lucky guy to have been able to spend the last two years of my life with this beautiful, intelligent, funny, strong, and bad ass woman!"

"Thank you for the greatest 2 years, thank you for being you, and thank you for, well ya know, Riiiiickk."

In the two years Shawn and Kaitlyn have been engaged, the reality TV stars settled into a cozy life in Nashville, Tennessee with their dog Doodle.

Although the couple appears madly in love, a wedding seems to be the furthest thing from their minds.

"[Wedding plans] are going terrible," Kaitlyn admitted to People in January 2017.

"You go on the show, you get engaged and then it's like, what's next? But we don't really know. We are both the kind of people where we're terrible at planning anything, whether it be like, a [vacation] or a trip to the grocery store!"

"We're kind of just like, 'When it happens, it happens,'" she added.

"We're so busy, we don't have the time to sit down and plan a wedding, but it if someone wants to plan it for us, we're open! I'd get married tomorrow if someone just said, 'Show up here at this time.'"

The Bachelorette's next edition, Season 13 starring Dallas attorney Rachel Lindsay, is set to premiere Monday, May 22 at 9PM ET/PT on ABC.