On Tuesday afternoon, Kardashian was on the set of a photo shoot in Beverly Hills when her friend Malika Haqq broke the news to her. Khloé immediately left the photo shoot and caught the next flight out to Las Vegas with her sister Kim and their mom Kris Jenner.
The family has been staying by Lamar's side while he struggles for survival. He is reportedly in a coma, with some of his organs shutting down, according to TMZ.
The former basketball player was rushed to the hospital after he was found unconscious at Love Ranch South, a legal brothel in Crystal, Nevada, on Tuesday.