RHOBH fans roast newbie Kathy Hilton for forgetting what network airs reality show during video chat with Kyle Richards

REAL Housewives of Beverly Hills fans got a good laugh from show newbie Kathy Hilton.

In a video with her sister and show OG, Kyle Richards, she seemed to forget which network airs the long-running reality show.

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In an Instagram video, Kyle told her older sister, Kathy: "Everyone has got to tune in for the West Coast feed at 8 o'clock."

Kathy replied: "And which is it on, cause a lot of people ask me."

Kyle answered: "What do you mean, what channel is it on, it's on Bravo, Kathy."

Fans laughed commenting: "Kathy is truly the purest form of chaos I've ever seen, and I can literally not get enough."

Another added: "She is SO effortlessly hilarious. I need 100 more seasons with Kathy."

A third added: "We don't deserve Kathy."

Others said: "IT'S ON BRAVO KATHY."

Another shared: "Kathy reminds me of myself a lot. I'm always so out of it."

One follower wrote: "Bravo Kathy, Bravo!"

Kathy joined RHOBH is season as a friend of the show.

Kyle and Kathy's younger sister, Kim, also appeared on the show in past seasons.

A fan recently asked Kyle over : "Does it feel different having one sister on the show versus the other? Your whole family are riots in their own ways. Very entertaining lol."

Kyle said: "Very ... we are all so different yet so much alike."