Jay Cutler and Kristin Cavallari's engagement was called off this weekend, which came as a total surprise since they two had an engagement party the previous weekend and even registered for wedding gifts.

Us Weekly reports that Cavallari was "blindsided" by the breakup while a source told People it was Cutler's "controlling" nature was a major factor.

A single, ring-less Cavallari stepped out Monday but she wasn't alone -- she had the company of her Yorkshire terrier. Click on the "Launch Gallery" photo for all the photos below:

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Cutler changed his Facebook status to "single" Sunday night, before deleting his account entirely.

Do you know anyone whose engagement was called off? Tell TooFab in the comments below!

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