May 25, 2011 11:46 am

Kim Kardashian and Kris Humphries engaged

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Kim Kardashian is finally getting hitched. After only a few months of dating boyfriend, New Jersey Nets forward Kris Humphries, the two got engaged last Wednesday. Humphries spared no expense on the ring either, unloading a 20.5 carat diamond on the reality star.

“I didn’t expect this at all,” Kardashian, 30, tells PEOPLE in an exclusive interview (out Friday) of the romantic, surprise proposal. “I was in such shock. I never thought it would happen at home, and I never thought now.”

Humphries popped the question with a custom-designed, 20.5-carat Lorraine Schwartz diamond sparkler. “I just knew I wanted it to be big,” says Humphries, 26, who, with the help of Kardashian’s mom Kris Jenner, planned an intimate family celebration later that evening

You knew it wanted it to be big, huh Kris? Well, if you can appreciate big things, I’m sure you can appreciate dat ass.