(Cover) - EN Showbiz - Kourtney Kardashian says her sister Kim can be herself around new fianc Kris Humphries.

Reality star Kim, 30, recently revealed that she will be trying the knot to professional basketball player Kris, 26, after a very romantic proposal which saw him asking for her hand in marriage with a rose petal-written message.

Kim's older sister Kourtney, 32, has given the impending nuptials her blessing, and is pleased to say that her sibling's relationship is completely natural.

"Kim is totally herself in front of him," she told People. "Everything is easy, comfortable, no stress."

The Kardashian family, whose turbulent lives are documented on shows such as Keeping Up with the Kardashians, are famously close-knit. Kourtney is glad Kim has chosen a guy who gets along so well with her and other family members such as sister Khlo, 26, and mom Kris Jenner, 55.

"He fits in [with the family] already. I think they're just themselves, and I think that's the most important thing," beamed Kourtney.

Kourtney is mother to 17-month-old Mason Dash Disick, her son with boyfriend Scott Disick. She and Scott have no plans to follow in the footsteps of Kim and Kris, as Scott explained during his recent 28th birthday party in Las Vegas.

"We're happy," said Scott. "I think that if it's not broke don't fix it. We couldn't be happier." (C) Cover Media