Kim Kardashian and Kris Humphries are currently negotiating a prenup, reports TMZ. Apparently both Kim and her NBA player fiance agree they should have such a document, in case their marriage doesn’t last the ages.

Sources close to the couple tell us … both Kim and her NBA star hubby-to-be are telling friends, “It’s the smart thing to do.” And, by the way, they’re right.

We’re told the move isn’t one-sided. Both Kim and Kris have tons of loot. Kim is worth a reported $35 mil.

As for Kris … he’s not only making $3.2 mil a year with the Nets, his family also owns a couple of burger joints in Minnesota. Kris’ net worth is estimated at $8 million.

We’re told Kim’s late father, famed O.J. Simpson attorney Robert Kardashian, told her about the importance of contracts … and Kim feels her dad would have wanted her to take financial precautions.

Gumbumpers, what do you think about the prenup??