updated 06/15/2012 AT 2:00 PM ET
•originally published 06/15/2012 AT 4:25 PM ET
In Winfrey’s much-hyped interview with Kim and the rest of the Kardashian clan – which will air in two parts (June 17 and June 24 at 8 p.m. ET) on OWN – the talk show host says Kim seems to have matured since her 72-day marriage to Kris Humphries.
“You’re growing up,” observes Winfrey. Says Kardashian, 31, “I’m totally growing up.”
Kardashian says she has changed her outlook on life and even who she surrounds herself with. “A lot of my friends, the people that I love to just sit and talk to and spend my time with, are wiser, a little bit older than me,” says Kardashian. “Before I used to, you know, all my boyfriends were younger. I always dated five years younger. My whole thing was completely different.”