Kim Kardashian wants Khloe to dump Lamar because his drug problem is destroying the Kardashian brand.
The showdown between the sisters occurred just before Kim left for Paris with her baby daddy, Kanye West.
"Khloe was at momager Kris Jenner's house, and Kim just lit into her about how much Lamar was hurting their bottom line and creating so much negative publicity. Kim can't understand why Khloe hasn't dumped Lamar because he is showing absolutely no desire to go to rehab," a family insider told Radar.
"The headlines surrounding Lamar's womanizing and drug addiction are tacky according to Kim, and she doesn't want to be associated with it. Khloe has maintained that she isn't ready to pull the plug on their marriage. The last thing Khloe needs is her family turn on her. Khloe left the house in tears."
According to sources, Khloe "isn't about to take marriage advice from Kim! Afterall, she pulled the plug on her second marriage to Kris Humphries after only 72 days, and had a child out of wedlock with Kanye. All Khloe wants is support from her family.
"It's no secret that their mother, Kris, plays favorites, and Kim can do no wrong in her eyes. Publicly Kim will say she supports Khloe, but it's an absolute lie."