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Kim Richards is speaking candidly about why she checked into rehab in December.

In a sneak peek at the Real Housewives of Beverly Hills' three-part reunion, Kim tells Bravo's Andy Cohen, "I'm an alcoholic."

What will the other ladies have to say about this not-so-shocking admission?

We'll have to wait and see, although Kyle Richards has been accusing her sister Kim of having addiction issues since season one.

Also in Bravo's reunion sneak peek? Cohen asks Taylor Armstrong whether or not she thinks estranged hubby Russell was murdered, Lisa Vanderpump accusing someone (ahem, Brandi Glanville?) of wanting to sleep with her husband and much more.

The reunion airs Jan. 30, Feb. 6 and Feb. 13. Who's excited...or scared?