Lisa Vanderpump thinks there's "a lot more depth" to the new stars of Vanderpump Rules

Speaking on the Watch Party by Bravo: Vanderpump Rules Premiere panel, Lisa shared: "One of the most important things for me is that I like them all. I really do.

"For all their naughtiness and their hijinks ... there are other aspects to their character that you will see, things that they have been through in life that change your opinion, more sensitive sides of them. They talk about relationships, relationships with their parents. All of those characters, you see a surface, but there's a lot more depth."

Lisa also provided an insight into how she selects the cast.

The 65-year-old TV star - who owns restaurants across the US - explained: "The business has to function. It has to function well. People need experience and must be able to do the job. About 70 percent of the people you see have worked there for two years. That's why you see the existing relationships. You see the tension.

"If we started just casting a show and put them in, it wouldn't feel authentic, and authenticity in any show is actually what's going to put you in."

Lisa was convinced that the long-running reality show needed a refresh.

Asked whether she misses the show's old cast, Lisa replied: "Vanderpump Rules went on for so many years, and the problems became pretty serious. It was about relationship breakups. It was about businesses declining, marriages ... We also had to deal with people who didn't want to film together.

"Some people took on other things in their lives. And I always said, 'I don't want to go down on a sinking ship.' I feel it's time to pull the plug, as long as we're all on the same page."