There's about to be another Kris in the Kardashian family -- because Kim Kardashian and Kris Humphries are engaged, TooFab has confirmed.

Kris popped the question on May 18 at Kim's Beverly Hills home, where he was waiting in the bedroom with "Will You Marry Me?" written in rose petals. She said "Yes."

The 26-year-old forward for the New Jersey Nets proposed with a 20.5-carat custom-designed Lorraine Schwartz ring, telling PEOPLE "I just knew I wanted it to be big." FYI -- sister Khloe's ring from Lamar Odom is reportedly 9-carats.

Of the engagement, 30-year-old Kim says "I didn't expect this at all. I was in such shock. I never thought it would happen at home, and I never thought now."

The two started dating only six months ago after meeting in November. Kim dated Halle Berry's ex, Gabriel Aubry, at the same time -- but broke it off with Gabriel to continue seeing Kris.

This will be Kim's second marriage. She was previously married to music producer Damon Thomas from 2000-2004.

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