Kristin Cavallari flashes her flat tummy in a white bikini on the beach as she introduces a pearl jewelry collection... after revealing she is 114lbs

Kristin Cavallari was seen in a white bikini top with a little wrap miniskirt on the beach in a new image shared to Instagram on Tuesday.

The star was introducing her new line of pearl jewelry for Uncommon James.

'Fresh pearls for your beach day look,' wrote the TV bombshell in her caption.

The 37-year-old reality TV star had her white blonde hair down over her shoulders as she put one arm up on a boulder.

The Hills veteran was on a beach in Mexico for a shoot to promote her company.

This comes after the mother-of-three shared on her podcast that she is a very small 114lbs at 5ft3in.

Kristin Cavallari was seen in a white bikini top with a little wrap miniskirt on the beach in a new image shared to Instagram on Tuesday

Cavallari was discussing her weight when revealing she was so unhappy being married to former football player Jay Cutler, 41, her husband from 2013 until 2022 that she got down to 102lbs.

The TV star was 'very thin' due to stress from the 'unhappy' union that resulted in three children.

Cavallari made her comments during her Let's Be Honest podcast.

The Laguna Beach star was asked by a fan how she looked so thin when making Very Cavallari, which aired from 2018 to 2020.

'I was very thin. I'll put it in perspective for you guys. I'm 5'3'. I currently weigh 114lbs. Filming Very Cavallari, I got down to 102lbs and I was eating the same amount of food that I'm eating now,' she explained.

Cavallari admitted that the marriage made her stress out. 

'The difference was I was so unhappy and so stressed out,' she explained.  

'I look back at photos from that time period and I am like, "Holy s**t!' I was rail f***ing thin. I was skin and bones. I looked like s**t,' she admitted.

The star was introducing her new line of pearl jewelry for Uncommon James. 'Fresh pearls for your beach day look,' wrote the TV bombshell in her caption

The 37-year-old reality TV star had her white blonde hair down over her shoulders as she put one arm up on a boulder

The Hills veteran was on a beach in Mexico for a shoot to promote her company

'I think I look so much better now. And you guys, that was just stress. That was being in a really unhappy marriage, quite honestly. Literally, I was so unhappy and I had way too much on my plate.'

And the jewelry designer added she thinks she is better off at 114lbs. 

She also appears to be happier in her love life too as she is dating 24-year-old Mark Estes, whom she proudly kisses and hugs on social media

This is not the first time Kristin has talked about her weight loss during her Cutler marriage

In June 2022, she shared that she was happy with her figure after having added a few extra pounds.

In an interview with Us Weekly, the reality TV star provided an update on her approach to health and fitness. 

'My goal is sort of, right now, just to maintain the muscle that I have. I'm not trying to lose weight,' the Uncommon James founder told the outlet.

This comes after the mother-of-three shared on her podcast that she is a very small 114lbs at 5ft3in. Seen with  her three children with former football star Jay Cutler, 41

Left in 2022 and right in 2024; she said she feels better now with weight on her. She gained 12lbs

Seen earlier thismonth while on vacation in Tennessee while in a hot tub with a view

She continued, 'I don't weigh myself. I can tell how my clothes fit me.'

Kristin added, 'I've put on a lot of weight in the last few years, but in a good way.'

The cover girl noted at the time that she looked at old photos of herself and was 'shocked at how thin' she had once been. 

'I didn't realize it at the time, how thin I was,' she admitted. 'So I'm happy that I've put on weight.'

Kristin acknowledged that her naturally slender body type made it challenging for her to build muscle.

'I'm really petite. I have no hips. I'm just small,' she explained.

She also appears to be happier in her love life too as she is dating 24-year-old Mark Estes, whom she proudly kisses and hugs on social media

'And so if I don't work out for like a week or two, I feel like all my muscle goes away. So it is about consistency for me.'  

The television personality revealed that she now works out three days a week with a personal trainer who 'kicks my a**'.

'He pushes me really hard. He has me actually lifting really heavy weight, the heaviest weight I've ever lifted in my entire life,' she said.

'I feel the best I ever have. I feel like I'm the strongest I've ever been. I'm just really comfortable in my skin right now, which is a really good feeling.'

The designer went on to say that she will often do a fourth day of exercise on her own including working out for 30 minutes on a VersaClimber, which she adds, 'will also kick your butt, man.'  

In addition to adhering to a consistent fitness regimen, Kristen told the outlet that she maintains a healthy diet and rarely drinks alcohol. 

'I think it's kind of everything in a healthy lifestyle, it all works together', Kristin said. 

'I feel like I'm only doing the things that I really love right now and that feels really good,' she concluded.

 'My work-life balance right now is at a perfect place and I'm really thankful for that.'

Here The Hills star is seen very thin in 2019 while on a yacht; she seemed to be at her thinnest in this image

The Hills veteran, who shares sons Camden and Jaxon, and daughter Saylor, with ex-husband Jay Cutler, has previously said that pregnancy changed her outlook on body image and dieting.  

In her 2016 autobiography Balancing in Heels, Kristin wrote, 'Becoming pregnant made me get serious about my health. Before pregnancy, I thought zero-calorie food was good for you and every calorie was equal. 

'Deep down, I knew that my eating habits weren't truly healthful, but I put a lot of pressure on myself to be thin. I was my own worst critic: I hated the way I looked in certain pictures. 

'Everyone around me was tiny, and I felt like I had to be too. I thought counting calories gave me control over my body.'