Kristin Cavallari has got engaged.

The former 'Laguna Beach' star is set to wed beau Jay Cutler after the NFL star proposed during a recent holiday in Mexico.

A source said: "He surprised her with a quick trip to Cabo to ask her to marry him."

There is no further news on whether the couple have set a date for their nuptials.

Kristin, 24, recently spoke out about Jay - who she began dating last year - saying she thought he was the right man for her.

She said: "I'd like to say he's 'The One'."

She also said she loved living in Chicago with him, where he plays for the Chicago Bears.

She said: "I love Chicago. My mom is there - and that side of my family - so, I get to spend time with my mom who I don't get to see that often. But it's been great. I love the city and during the football season I was there a lot. Now, we're both out here."

Kristin has previously dated Brody Jenner, who she starred with in 'The Hills'.