Lisa Rinna has opened up about a "very uncomfortable" couple of years when her daughters were feuding

Speaking on the Las Culturistas podcast, she said: "Those girls can fight, you know? Girls can love and then hate each other.

"We went through a couple of years, and woo, very uncomfortable."

Lisa insisted Delilah and Amelia are now "super supportive" of one another in a "very tricky" industry, and she and Harry are "very proud" of their offspring.

She added: "They're very close back [together]. They're sisters, you know what I mean?

"But super supportive of each other in this business they're both in, which can be very tricky.

"Both of us, Harry and myself, feel that whatever we did, we turned out some good humans - good human beings. Kind, compassionate, good girls.

"And I'm very proud of that."

As well as their daughters supporting one another, Lisa and Harry also help each other out a lot.

Asked about the key to their successful marriage, Harry - who wed Lisa in 1997 - told US TV show Extra: "I think we listen to each other, we respect each other, we support each other.

"Not a bad roll in the hay, also - that helps!"

The Clash of the Titans star also often takes on the main kitchen duties.

He said: "I cook every day in my house... mainly because I like what I like and I want to eat what I like, and if somebody else is cooking, it's not going to be what I like. So it's very selfish of me to cook for myself and for the family."