Kristin Cavallari is looking hotter than ever

She just turned 23-years-old and Kristin Cavallari is looking hotter than ever.

In a recent interview with Usmagazine, “The Hills” star dishes that she’s been taking a circuit training class at the gym. She says, “I never want to go and I walk out dripping in sweat and it kills you, but it works.”

“And I feel good… This is the first time in my life where I’ve really been working out consistently,” says Ms Cavallari.

As for her diet, Kristin’s secret to staying slim and trim is all about control with a one day-a-week break.

She says it’s all about, “Control for six days of the week and then letting yourself eat whatever you want on that one day!”