Kristin Cavallari, 37, packs on PDA with new boyfriend Mark Estes, 24, as she makes her “country” debut on his popular Montana Boyz TikTok… after a bikini-filled romp with the model

Kristin Cavallari’s romance with her new boyfriend Mark Estes is heating up.

The former Laguna Beach star, 37, popped up in a fun video on the 24-year-old model’s joint TikTok, the Montana Boyzalong with his friends on Friday, just three days after she revealed their relationship.

In the short clip, the Montana Boyz — Estes, Kaleb Campbell Winterburn and Kade Wilcox — sync to Jason Aldean’s 2009 hit She’s Country as they appear to introduce Kristin as part of their posse.

Dressed in jeans and a T-shirt that reads “This Ain’t My First Coors Rodeo,” Kristin flashes her megawatt smile before Mark hugs her from behind.

The touching video was viewed more than 1 million times in less than six hours after being posted and was captioned: “Brother, she is country.”

In the short clip, the Montana Boyz – Estes, Kaleb Campbell Winterburn and Kade Wilcox – lip-synch to Jason Aldean’s 2009 hit She’s Country as they appear to introduce Kristin as part of their posse

Kristin’s debut on the Montana Boyz page comes after she shared a bikini-filled romp with Mark on his personal TikTok.

Rocking a green two-piece, Kristin jumped into her new boyfriend’s muscular arms as they frolicked along the edge of a pool.

The adorable couple packed on the PDA as Gloriana’s country song (Kissed You) Goodnight played in the background.

The new couple’s warning comes nearly four years after her divorce from former NFL player Jay Cutler, the father of her three children.

Kristin revealed her latest love match on Tuesday, when she shared a photo of herself cozying up with Mark during their getaway in Los Cabos, Mexico.

She captioned the surprising photo: “He makes me happy.”

Originally from Montana, Mark played wide receiver for the Montana State University football team.

Now living in Nashville, he shares the same city with Kristin.

Decked out in jeans and a T-shirt that reads “This Ain’t My First Coors Rodeo,” Kristin flashes her megawatt smile before Mark hugs her from behind

The touching video was viewed more than 1 million times in less than six hours after being posted and was captioned: “Brother, she is country.”

As reported by TMZthe couple has been spending time together for about a month, but their relationship has not yet reached a serious stage.

Insiders revealed to the outlet that Kristin and Mark flew to Mexico together last week, with eyewitnesses noting them openly showing affection during the flight.

Kristin and Jay announced that they were divorcing in April 2020 after seven years of marriage.

The former couple have three children: Camden, 11, Jaxon, nine, and Saylor, eight.

Kristin’s new romance comes after she admitted she wasn’t in a dating mood last year.

“It’s really not important to me right now,” she said E! News in September 2023. “It just doesn’t depend on where I am in my life,” she added.

“I’m a mother first,” she continued.

Kristin’s debut on the Montana Boyz page comes after she shared a bikini-filled romp with Mark on his personal TikTok

Rocking a green two-piece, Kristin jumped into her new boyfriend’s muscular arms as they frolicked along the side of a pool.

The adorable couple packed on the PDA as Gloriana’s country song (Kissed You) Goodnight played in the background

Montana Boyz is a TikTok collective with almost 460,000 followers

Kristin was previously married to Jay Cutler, a former football player, from 2013 until they split in April 2020, and their divorce was finalized in June 2022; seen in 2015

“And I’ve had a lot of fun over the last few years, really focusing on my friends and being able to hang out with my friends again because I haven’t been able to do that for a long time.”

Kristin rose to fame in 2004 with her role as a high school student in MTV’s Laguna Beach: The Real Orange County.

After this, she starred in projects such as CSI: NY, Spring Breakdown and The League.

From 2018 to 2020, Kristin presented her Uncommon James line in her own reality show Very Cavallari.