NEW YORK – When “Keeping Up With the Kardashians” debuted in 2007, Kim Kardashian was the star, whose claim to fame was doing a sex tape with an R&B singer named Ray J.

Now, Kardashian is famous for her fashion and beauty.

But other Kardashians have plunged into the spotlight: Sister Khloe Kardashian’s recent wedding special grabbed 3.2 million viewers; and tabloids and blogs followed every step of sister Kourtney Kardashian’s pregnancy. (She and boyfriend Scott Disick are parents of a boy, born Monday.)

Now the whole Kardashian clan has returned to E! with a fourth season of their reality show.

AP: How have your lives changed since Season 1?

Kim Kardashian: “I think even from Season 3 to Season 4 we’ve all changed. We’ve all grown so much closer together, so this season I think you’ll definitely see that. And we’ve added so many new family members to the mix now. (Kourtney Kardashian’s son, Mason Dash Disick; Khloe Kardashian’s husband, Los Angeles Laker Lamar Odom.)

Khloe Kardashian: “Our dynamic with each other has changed. I think that’s on rotation every month. We’re friends because we’re sisters, but I think we rotate on which one’s our best friend.”

AP: Did you aspire to be in show business?

Kim Kardashian: “I don’t think we ever thought of being in the entertainment business. We started having our clothing stores six years ago before the show and we’ve always been really fashion-oriented. … The show opportunity just happened and we’re just having so much fun.”

Khloe Kardashian: “Also, as kids all of our friends were either, like, Lionel Richie’s daughter or Rod Stewart’s kids, so we all grew up with a pretty cool clan of kids and parents. So … I feel like we’ve always been, like, … in the entertainment industry – just not well-known.”

AP: Khloe, you’re married to a pro basketball player. Kim, you’re dating a pro football player. Are you sports fans?

Khloe Kardashian: “I am so into basketball. I won’t watch a regular game. But when I see Lamar play, I’m so into it. I cheer and I get mad and if he gets fouled or they call a technical, it’s so crazy. Like, even that I know these words, it’s bizarre. And I love to watch football.”

AP: Are the guys in your family excited you have sports connections?

Khloe Kardashian: “When I met Lamar the first night, I was with our brother Rob. Some guy was staring at me and I kept saying, ‘You’re so rude. You’re staring at me’ so he could hear me. Rob was like, ‘Please be nice. That’s Lamar Odom!’ He’s like the best basketball player.’ I was like, ‘I don’t care, he’s so rude!’ ” (laughter)

AP: And fast-forward to now and you’re married to that guy!

Khloe Kardashian: “And now I’m the one who is obsessed with him!” (laughter)

AP: You have three clothing stores. You’re known for your fashion. Have you always been stylish?

Kim Kardashian: “I think if we look back at the things we wore, we were, like, ‘I can’t believe I wore that.’ But at the time, it was stylish. I think we’ve always been stylish.”

Khloe Kardashian: “Kim was always stylish. … One time, for a Prince concert, she wore leather pants and a purple tube top and put, like, purple gems on her face and I remember thinking she was so cool. She’s always been a fashionista.”