TMZ reports that Khloé will be citing irreconcilable differences.
“It was a recent decision,” a source close to the couple told People. “She’s been holding out hope but she has to look out for herself.”
Reports surfaced in August about Lamar’s substance abuse and about their marriage falling apart.
The pair has tried to work things out and were even seen together at a Kanye West concert in October with the rest of the Kardashian clan.
However, Khloe “realized it’s the best thing to move on,” the source told People.