Kristin Cavallari shares a ‘naughty’ message after debuting romance with much-younger Mark Estes

Kristin Cavallari had a “naughty” message for her followers after she hard-launched her new, much-younger beau, Mark Estes.

“You can be as naughty as you want just don’t get caught,” read a quote painted on a wall in a photo that the “Hills” alum shared to her Instagram Story Wednesday.

Cavallari, 37, debuted her romance with the athlete, 24, Tuesday while vacationing with him in Mexico.

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“He makes me happy,” she captioned a selfie of the pair in Los Cabos.

Estes, meanwhile, posted a PDA-packed TikTok video that shows the lovebirds embracing in front of a pool.

Set to the tune of Gloriana’s 2012 hit “(Kissed You) Good Night,” the brief clip also features Estes as he picks up a bikini-clad Cavallari, who throws her legs around his waist.

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Although the relationship appears serious, a source close to the TikToker told Page Six that they “aren’t official yet,” though they’ve “been talking” for several weeks.

“Kristin thinks Mark is super hot. He’s very flirtatious, and she’s loving it,” the insider elaborated. “They were down in Mexico for just a few days but had a lot of fun together. It’s still new.”

While fans have raised their eyebrows at the 12-year age gap between the two, we’re told the couple are “unfazed” by the criticism.

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“They’re two consenting adults who like each other, so who cares?” our insider said Wednesday. “Everyone is entitled to their opinion, but Kristin and Mark aren’t paying attention to the noise.”

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Estes was born in October 1999 and graduated from Montana Technological University, where he played wide receiver, in December 2023.

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Additionally, he is known as a member of the popular TikTok account Montana Boyz.

Cavallari has dated a variety of men since her 2020 divorce from former Chicago Bears quarterback Jay Cutler.

The Uncommon James founder and Cutler, 40, share 11-year-old son Camden, 9-year-old son Jaxon and 8-year-old daughter Saylor.