Oprah Winfrey To The Kardashians: What Are You Actually Famous For?

All hail the Mighty O!

If there's one person who could get away with asking just about ANYTHING in a sit-down interview, it'd have to be Mz. Oprah Winfrey !

As we mentioned earlier this week, on Sunday, Oprah's Next Chapter will be airing O's interview with the whole Kardashian Klan...and she left no scandal sex tape subject unturned, friends!

Check out an all new sneak peek of Oprah's little trip to DashLand (above)!!!

Oh SHIZ!

From Kim's failed marriage and sex tape to Kris "pimping" out her kids, we TOLD you she held NOTHING back!

Tune in on Sunday at 8pm on OWN for all the juicy questions -- AND the answers!