Cavallari is posing in a string bikini

Kristin Cavallari has shared new bikini photos to support her Uncommon James jewelry line. 'Having the summer of my dreams,' wrote the Very Cavallari star in her Instagram caption.

The jewelry designer was spending her down time at the Bolt Farm Treehouse Hotel, a 'resort A luxury, mountaintop experience' in Tennessee. She was with her younger boyfriend Mark.