Khloe Kardashian is "worried" about Lamar Odom.

Khloe Kardashian

Khloe Kardashian

The 'Keeping Up With The Kardashians' star admitted she feared for her estranged husband when she struggled to get in contact him whilst she was on vacation in Cuba because their Wi-Fi connection wasn't very good.

After finally getting in contact with Lamar, she told her close pal Malika Haqq she was "paranoid" about his behaviour.

She added on Sunday's episode of their E! reality show: "I don't know, like his behaviour is just ... different. I mean even his drinking alone is so bothersome to me and it makes me so furious because he can't even be drinking, it hasn't even been one year."

Meanwhile, the 32-year-old television personality previously slammed those who criticised her for not supporting her former spouse - who was found unconscious at a brothel after a drink and drug binge in 2015 - when he was removed from a flight for being "wasted".

She blasted on Twitter: "Stay in your f***ing lane little girl. You know nothing about anything. You're a sheep herded by society. (sic)"

The incident happened when Lamar left his first class seat before the plane left the ground and then threw up in the galley and in the bathroom. After being escorted off the plane once, Lamar returned again 10 minutes later but when he used other passengers' heads to steady himself, he was removed from the plane.

And Khloe previously revealed she considers herself to be a "loner".

She shared: "I love living alone because I am a loner by nature. The best thing about it is that I can literally just run downstairs naked and don't have to think about it. I couldn't do that before, with Rob and his friends who would come over. I really like having 'me' space.

"The worst thing about living alone ... is that I'm alone! My house is filled with people during the day. After they leave, it's quiet. I am too content being alone. I could stay at home all day. I have to MAKE myself go socialize. (sic)"