Kim, 30, is worth an astounding $35 million, while Kris, 26, earns $3.2 million per year playing for the New Jersey Nets.
Additionally, Kris' family owns a burger chain, bringing the NBA star's estimated net worth to $8 million, according to the site.
Sources close to the couple told TMZ that Kim and Kris believe having a prenup in place is "the smart thing to do."
A rep for Kim was not immediately available for comment on the reported prenup when contacted by Access on Saturday.As previously reported on AccessHollywood.com, Kim and the New Jersey Nets forward announced their engagement on May 25 after dating for six months.
Kris surprised the reality star at her Beverly Hills home on May 18, when she came into her bedroom and found him on one knee with "Will you marry me?" spelled out in rose petals on the floor.
Source : Yahoo OMG