Kristin Cavallari and Jay Cutler have ended their engagement.

The NFL player popped the question to the former 'Hills' star on a romantic trip to Cabo, Mexico, in April an although the couple were busily preparing for a spring wedding next year, friends have revealed Jay "dumped" his fiancee.

A source said: "She got dumped. She's absolutely devastated. She can't believe this is happening.

"She was planning her dream wedding, the date was set, the location - everything was set. She's in shock that the dream wedding she was planning is going to end this way."

Kristin - who dated Chicago Bears quarterback Jay for 10 months before they got engaged - spend Saturday night (23.07.11) being comforted by pals heiress Nicky Hilton and model Alessandra Ambrosio at The Beverly in Los Angeles, where she was spotted without her engagement ring.

An onlooker told People: "She was hanging out at a table with Nicky Hilton and Alessandra Ambrosio. She was telling friends how they called off the engagement."

The shock break-up comes just a week after they held a party to celebrate their upcoming nuptials with Krisitin tweeting: "Thx to all my amazing friends for making my engagement party a blast last night! (sic)"

Kristin has previously dated 'Laguna Beach' co-star Stephen Colletti and Brody Jenner, who she starred with in 'The Hills'.