Kristin Cavallari, 37, ignores critics of her age

Kristin Cavallari is enjoying a romantic rendezvous with her much younger cowboy lover Mark Estes in Montana. 

The couple, who have a 13-year age difference, are driving (and boating) through Montana, where the musician once lived with his Montana Boyz bandmates.

The Laguna Beach alum, 37, shared several snaps from her childfree vacation with her 24-year-old beau.

In one shot, the pair – who attended Stagecoach together – stand over a scenic outlook of a lake and mountains. The Hills star wore a grey tank top and matching leggings.

She captioned the carousel of photos: 'MT with him,' and added a white heart emoji. 

Kristin Cavallari is 'roughing it' with her cowboy in Montana. In one shot, the pair stand over a scenic outlook of a lake and mountains. The Hills star wore a grey tank top and matching leggings

The couple, who have a 13-year age difference, are driving (and boating) through Montana, where the musician once lived with his Montana Boyz bandmates

The Laguna Beach alum, 37, shared several snaps from her childfree vacation with her 24-year-old beau

In another photo, Mark sits at a table full of playing cards. He's taking a drink and smiling.

In two snaps, the Very Cavallari star is on a boat wrapped up in a cozy coat. One shot is during the day and the mom of three held a hand over her mouth as she laughed.

The other shot is at dusk with the Uncommon James founder looking out at the last remains of the sun before it slipped behind the mountain.

Kristin also shared photos of Mark driving the boat and laying in a bed cuddling a cute black dog.

A photo of Kristin at a scenic point in the road with a Buffalo standing not far behind her shows the former Laguna Beach resident with her arms crossed and smiling.

Several other picturesque shots of the wildlife and landscape rounded out her post. 

Her fans took to the comments to offer the support amid the ongoing backlash she faces for the age difference between her and Estes – especially when she admitted she'd have another baby with him.

'Congrats on finding love again. Age is a state of mind. Don’t listen to the ignorance of others,' one person wrote.

She captioned the post: 'MT with him,' and added a white heart emoji

Kristin also shared photos of Mark driving the boat and laying in a bed cuddling a cute black dog

She watched the sun dip behind the mountains from the boat

They had a very cute dog on the trip with them

She captured the vibe of Montana's wilderness in her pictures

Her fans took to the comments to offer the support amid the ongoing backlash she faces for the age difference between her and Estes – especially when she admitted she'd have another baby with him

'Congrats on finding love again. Age is a state of mind. Don’t listen to the ignorance of others,' one person wrote

'Why are men so upset that she found love again?? So what if he's younger, she's happy and looks amazing,' another person pointed out.

Yet another supporter wrote: 'Y’all are so cute! As someone who is 41 if I met a younger man and he was good to me who cares of the age gap. When men date younger they high five each other but a woman is judged. Hate the trolls. Keep slaying.'

The women's responses were directed a the throngs of people who asked if Mark was her son, if they were on college visits and other age-related slams. 

One women summed it up: 'I don’t get why women can’t date men younger than them but men can date woman younger than them. Like Dennis Quaid and his wife are 39 years apart and no says anything. Yet everyone gets so upset with Kristin.'