Kris Jenner is a "goofball".

Kris Jenner

Kris Jenner

The 'Keeping Up With the Kardashians' star admits people rarely see the lighter side of her personality, but she loves nothing more than relaxing with her group of girlfriends.

She said: "People just don't get what a goofball I am.

"They see the business side and the crazy family side, but I have a lot of friends who I enjoying spending time with. We have some serious belly-laughing going on when together, and that is so good for the soul. We really support each other."

The 59-year-old star feels very "lucky" to have such a close-knit family around her, including her six children - Kim, Khloe, Kourtney and Rob Kardashian, and Kendall and Kylie Jenner - and four grandchildren; pregnant Kim and her husband Kanye West's two-year-old daughter North and Kourtney and ex-boyfriend Scott Disick's kids Mason, five, Penelope, three, and Reign, eight months.

Asked her greatest luxury, she told Haute Living magazine: "Weekends with my kids. The memories of good times spent at our barbecues are stamped in my mind--playing tennis and swimming in the pool. I'm happy that my kids are now doing the same with their kids, and I still get to be a part of it. I feel lucky."

Despite her glamorous image, Kris is "obsessed" with discount wholesaler Costco.

She admitted: "Oh, my goodness, I am obsessed with Costco! We do runs at least twice a week. I love the salmon and rotisserie chicken, the dog beds.

"Costco is my favourite store."