Pairing up for a fan greeting session, Kourtney Kardashian and Khloe Kardashian were busy working away in Santa Monica, California on Tuesday (February 8).

The E! reality star sisters both looked darling as they took to Barnes and Noble for a book signing session for their literary offering Kardashian Konfidential.

Credit: Celebrity Gossip

After spending two months in New York City to film Kourtney and Kim take Manhattan, Kim returned to Los Angeles 10 pounds heavier. With her hectic schedule, not only did Kim indulge but without a trainer to push her, she also skipped regular workouts. She and Kourtney would "eat nuts and hot dogs from street vendors every day," Kim tells Life & Style. "It was crazy. We had no time to stop and eat well or even look for healthy food. We just had to grab what we could as we ran past the food carts."

Since then, she's been on a mission and in just two weeks, the 5-foot-2 bombshell is back to a size 2! She's committed to daily workouts with either her long-time trainer, Gunnar Peterson, or what she calls her early-morning "rise and grinds" at Barry's Bootcamp. "I'm doing vigorous workouts all the time," Kim told Life & Style at the Borders in Century City, Calif., between signing copies of Kardashian Konfidential. "I work out with Gunnar -- mostly weights. Then I do boot camp. I alternate every day. One day trainer, one day boot camp."

Kim also been eating portion controlled meals from Sunfare, a gourmet-meal delivery service that Britney Spears, Eva Longoria and other celebs also rely on. "It's the only diet I can stick to," Kim tells Life & Style. "It makes me eat healthy because the food [breakfast, lunch, dinner, snacks] is at my house when I wake up."

Credit: Life & Style

Drawing an end to a full day of promoting, Kim, Kourtney and Khloe Kardashian were looking lovely at Borders bookstore in Century City, California on Thursday (December 2).

There to sign copies of their new book Kardashian Konfidential, the E! reality beauties happily posed for pictures before grabbing seats at a table to greet a crowd of gathered fans.

Credit: Celebrity Gossip

Khloe Kardashian, Kourtney Kardashian and Kim Kardashian promote their new book "Kardashian Konfidential" at Barnes & Noble, 5th Avenue on November 30, 2010 in New York City.

Credit: Zimbio

In Hollywood, it's rare that a woman wants small breasts -- and it's even more strange when a woman asks God to help stop them from growing.

Be that as it may, Kim Kardashian once asked the man upstairs "please don't make my boobs grow any bigger," Radar Online has learned.

Kim, along with sisters Kourtney and Khloe, have penned a new Book -- Kardashian Konfidential -- a fun and relatively easy read that looks at their childhood and offers lots of beauty and style tips.

The book is also lined with photos and letters that the girls wrote to each other through the years.

In the middle of their New York book tour, the three sat down with popeater.com and dished some fun and embarrasing childhood secrets.

In the book, Kim writes how she had a hard time with her body as a young girl.

When asked about this, she told popeater.com: "Kourtney used to torture me and think I was odd because I had big boobs. I was 11 when I got my period and I started developing. I would sit in the bathtub, take a washcloth, put it under really hot water and put it against my boobs and pray to God, please don't make my boobs grow any bigger. And Kourtney would be like, "Your boobs are so big and ugly!" She was so mean and then I would have to wear a bra and she would say, "Who wears a bra? That's so disgusting." It was so embarrassing."

While the book focuses on the sisters' childhood and beauty tips, it has a message for young women.

"Stay true to who you are," Kim said. "We encourage strong family values. It sounds kind of cheesy to say "girl power," but that's really what we represent."

Credit: Radar Online

Khloe Kardashian was just 14 years old when she lost her virginity with an 18-year-old man whom she was "secretly dating", she revealed on The View Monday.

"Looking back I think that's not a normal thing," the married reality star, 26, admitted on the talk show, adding that she almost felt "conned" by her older sex partner. "Well, not conned, but persuaded, because he was older and I felt I wouldn't be accepted or cool or whatever," Khloe said.

How did she feel after the act? "I felt so disgusted with myself," she confessed. "I stopped talking to him and actually didn't have sex for three years after that because I knew I was young and I knew I wasn't ready."

Her biggest regret: "I should have listened to my parents," she said, telling her fans, "don't let anyone pressure you, it's not worth it and how I felt afterwards."

Wed to Lamar Odom since last September, Khloe wrote about the experience in Kardashian Konfidential, the tell-all co-authored with sisters Kim and Kourtney, out now.

Credit: Us Magazine

E!'s Kardashian trifecta of Kourtney, Kim and Khloé is spilling everything in the just-released triple-authored "sisterhood autobiography" called Kardashian Konfidential.

We've gotten a hold of the book and can tell you it makes for some juicy holiday reading. What secret scandals did we learn about the sisters? We'll tell you…

1. The now happily married Khloé Kardashian Odom lost her virginity at 14: Long before Lamar, the youngest of the three used to steal stepfather Bruce Jenner's car and drive to secret sex sessions with an older boyfriend.

Now 26, Khloé reveals that back then she lied about her age to her elder guy, but dishes out some wise advice in the book. "You should never, ever have sex when you're that young," she writes.

2. Kourtney's a borderline OCDer: The oldest sibling says she needs her fridge "perfect." Her glasses and dishes "perfectly lined up." Nothing can be out of order. She also "has to have" pink dish gloves. She worships cleanliness so much, she says she needs all the same style of hanger and forces baby daddy Scott Disick to do the same.

3. They dish on O.J. SImpson and how their family was involved: Although brushing over the infamous 1994 murder case case in the book, the sisters do reveal one interesting tidbit. While we knew that dad Robert, close with the former footballer since their college days, was a member of Simpson's Dream Team, we didn't realize that the infamous white Bronco slow-speed chase actually started at the Kardashian home.

4. Kim almost fainted when she met J.Lo. Oh, and J.Lo's the one who made Kim love her big booty. Kim writes that even though she's got fans, she's still one herself. "I really, really like J.Lo," she confesses. "I identify with her curves and she made me think it was sexy to have a big booty."

5. Kim's secretly into her many copycats: We knew she loved herself, but who knew she loved all her lookalikes, too? Kim says although she's now a celeb, she still loves to get out of VIP and mingle with the little people. "I like to go out in the crowd and take pics," she says of the girls who are dressed in her style. She says she gets "excited" to see them and doesn't want to let the fame ever get to her head.

"I like being myself, I don't want to be unapproachable," she says.

The book, which landed on shelves this week, also includes never-before-seen personal pictures, childhood stories, dating advice and even diary entries.

Credit: E! Online