Sources connected with the couple tell TMZ ... they already have a marriage license and plan to tie the knot before the week is out.
We're told it's strictly on the QT ... so much so they got a "confidential" marriage license so no one officially knows.
Sources tell us ... with a confidential license, K&K won't have to appear publicly at a courthouse to get married ... instead, an official from the court will actually go to them and perform the ceremony privately in their home.
And then, in a about a month -- after they're already legally married in California -- we've learned Kim and Kanye will hold a lavish. blow-out wedding ceremony in Paris.
They got engaged on Kim's birthday ... October 21.
Read more from the source: TMZ