Kylie Jenner's Best Friend -- 'Happy Birthday N****'

Kylie Jenner hosted a party for her best friend Wednesday where a cake was carted out with the message, "Happy Birthday N****."

Kylie is taking heat for the frosted message, but she now says the cake pictured below is the one she got ... not the one above.

Kylie's BFF, Jordyn Woods, is African-American -- not that it necessarily matters -- and says she really DID get the n-word cake from "friends."