As RadarOnline.com exclusively reported, Kim received the big bucks offer to document the remaining months of her delicate state.
David Dginguerian, who produced the movie Crossroad, wants to launch a membership-only website called MyPregnancy.com.
Kim, who is of Armenian descent, is pregnant by boyfriend Kanye West and due in late June. In a pitch letter to Kim obtained by Radar, Dginguerian suggests such a site could "generate $100,000 a month," with the money going to the "Christian Charity" of Kim's choice.
More importantly, he offered the Keeping Up with the Kardashians star, who is still married to Kris Humphries, $250,000 as a "signing bonus."
But in her title as Momager-in-Chief, Kris turned down the offer.