Kardashians Talk About Kendall's Racy Photos, Justin Bieber and More

"Extra's" Terri Seymour caught up with the Kardashians on a press junket for their new season of E!'s "Keeping Up with the Kardashians," where they talked about those pesky plastic surgery rumors, Justin Bieber -- and little sister Kendall Jenner's racy photos.

Big sis Kim Kardashian defended the 14-year-old's suggestive modeling shots, saying, "It was just a requirement that the modeling agency wanted. Swimsuits show her shape and her body. I asked her first, 'How do you feel about it? Did you feel like you were shooting anything that you were uncomfortable with?' And she said absolutely not."

Mom Kris Jenner added, "Kendall has always wanted to be a model, so it was really time to let her do her portfolio."

And what about the rumor Kim had butt implants? "I opened the magazine and it said 'Kim gets butt implants.' Butt implants?" Kris laughed, "The good news is we have enough butt to go around for four families!"

There is one story Kim would like to quash by saying she is not dating Justin Bieber. "I think it shows obviously he has a huge following of young girls," Kim said. "We would not seriously date. I could literally be his mom. To all the Beeb-lievers out there, we're just friends."

But who is Kim really dating these days? She claimed she wants to be single for awhile, despite being spotted with Dallas Cowboys receiver Miles Austin. "I made a promise to myself... I'm going to be single. This is the only time I can be 100 percent selfish. I have no kids, no husband, and I want to focus on work."

See how it all plays out when the "Keeping Up with Kardashians" premieres Aug. 22 on E!.