Kim in lingerie (again!) and more fashion news!

Welcome to the weekly fashion round-up, where we bring you the latest on supermodels, style, designers and everything in-between!

Which pop star insists she's not 'high maintenance'? Which supermodel is envious of her daughter's youthful beauty?

Here's the lowdown on the latest fashion news!

Kim and her sisters strip off to launch their new lingerie range

Kim, Khloe and Kourtney Kardashian have stripped down to sexy ensembles yet again to promote their Kardashian Kollection Intimates line.

In the photo, which Kim shared with her fans, the 31-year-old is seen wearing a sexy black lace bra and knickers set, with Kourtney sporting a similar nude and black set with matching hold-ups.

Khloe, meanwhile, is seen standing in the centre in the shot, flaunting her curves in a black basque and stockings.

It seems that the picture was taken a long time ago, before Kourtney announced that she was pregnant with her second child.

"My sisters are I are excited to reveal our new ad for our Kardashian Kollection Intimates!" the Daily Mail quoted Kim as saying while launching the range.

"The intimates line is so gorgeous, comfortable and feminine and we are very proud of the line!" she added.

Kim later tweeted a picture of herself reclining sexily on a bed wearing just a pair of tiny pink silk shorts, holding a sheet to her chest to protect her modesty.

She accompanied the shot with the caption: "Can't sleep tonight ..."

It is believed the shot is part of an upcoming campaign for Kardashian Kollection Intimates.

Jessica Biel, who recently got engaged to Justin Timberlake, has revealed how she maintains her fabulous figure.

The 30-year-old actress, who is a self-described "adrenaline junkie", doesn't just stick to the same workout routine. She takes advantage of the outdoors by biking and hiking regularly including that famous 2009 trip to the top of Mt. Kilimanjaro.

"When you get out into the wilderness and strip (away) all of the stuff in your everyday life, you really gain a great respect for your own life, simply as it is," Us Magazine quoted her as saying about her grueling mountain climb.

"Needing things starts to feel like, 'Oh, I kind of have everything, don't I?' It's pretty great," she said.

The Home Of The Brave actress is known for her strength, lean frame, and killer muscles, which she has obtained through a hardcore, athlete-calibre exercise routine like doing walking lunges to tone her backside, track sprints, weight training, plyometrics and more.

The star doesn't only stick to intense workouts, but also loves to do yoga twice a week to lengthen her muscles.

"I like to do a couple of yoga classes during the week," she revealed. "Yoga for me is more of an elongating thing."

She indulges in a diet that is full of healthy fresh foods like complex carbs at the beginning of the day, fruits for snacking, and fish and veggies for dinner.

She's a firm believer of the scheduled cheat day, where she can indulge and eat whatever she wants without feeling guilty.

"When I'm working and I eat healthily all week, then I give myself one day -- usually Sunday -- when I eat just what I want. You have to, otherwise your mind goes a little nutso," she added.

Nicole Scherzinger is adamant that she hardly spends any time in front of the mirror each day.

Yet, the singer is rarely seen in public without perfect hair and heavy makeup.

"I have a hectic schedule, so my daily beauty regime is pretty low maintenance...I have very long, thick hair -- it's like a horse's mane! So I tend to wear it up", Contactmusic quoted her as telling InStyle Magazine.

"I'll often pull it back into a high bun; it takes two seconds and still looks really chic," she said.

The former Pussycat Dolls star has a huge male following for her skimpy stage outfits and raunchy dance routines.

Scherzinger has been dating Formula 1 racer Lewis Hamilton on and off since 2007.

Richard Gere's model ex-wife Cindy Crawford has confessed that she feels a little jealous of her daughter Kaia Gerber's youthful look.

The former supermodel also said Kaia is getting more and more beautiful.

Asked if she was worried about getting older, Crawford replied: "Oh, please. I am a normal woman, I have good days and bad days and it's not really that fun,"according to the Daily Mail.

Talking about her daughter, she said: "I look at my daughter and I'm like, 'You have my old skin and I want it back! You have my old legs, I want them back! You have my old hair, I want it back!' She is just getting more and more beautiful and, you know."

"But at the same time, there's so much good that comes with it. And I think if you're happy in your life, it's a lot easier to take," Crawford said.

Last month, Kaia caused a stir when she posed for a Versace photoshoot even though she is just ten -- but her mother defended her decision to allow it.

"I thought it was appropriate and beautiful and she didn't have any makeup on. It was good for her because she liked doing it, but she also saw that it was work," Crawford stated.

Crawford was just 16 when she was discovered, and the following year was already being represented by the Elite model agency. She became one of the supermodels who dominated catwalks in the '80s and '90s.

While still modelling, Crawford is now married to former model Rande Gerber after her marriage to actor Richard Gere failed.

The mother of two confessed that she is forced to rely on the support of her family to deal with the times when she feels low about her body.

Rihanna has posted a topless photo on Twitter to show off her impressive physique and her natural hair colour, after her father Ronald Fenty, spoke about her having put on weight.

Fenty, with whom the singer has had a long and rocky relationship, praised her ex Chris Brown while putting his own daughter down.

In the upcoming issue of Heat Magazine, Fenty spoke about the Umbrella hitmaker having put on weight.

"I actually thought she was a little fat the last time I saw her," he told the magazine of the singer's enviable curves, adding that "she's dieting, she's working out," the New York Daily News reported.

"When I saw her this time, I thought she was back to her normal size," he said of Rihanna's slender appearance at this year's Grammys.

"I used to joke with her, 'Robyn, you're getting too fat!' but I think she's fine. I think she looked excellent, as everyone saw, at the Grammys."

Soon after the interview went public, the 24-year-old took to Twitter and posted a topless photo to show off her impressive physique and her natural hair colour.

In the interview, Fenty also spoke out about Rihanna's famous ex, Brown.

"Chris is a nice guy, and everybody's entitled to make mistakes in their life," Fenty said. "God knows how many I've made."

Fenty and Rihanna were not on speaking terms as recently as 2010, and have only recently begun to communicate again.

Despite their turbulent past, however, Fenty didn't appear to have any qualms about the couple potentially getting back together.

"She's her own woman now," he added.

Myleene Klass has admitted that she doesn't bother with crash diets as running around her young four-year-old keeps her slim.

"You hear it so many times, but I do spend a lot of time running after my four-year-old , it's my four-year-old that keeps me very, very busy, although I'm sure that's about to change because my one-year-old has just started, well, nearly walking," the Daily Express quoted her as saying.

"She's got a tendency to get in her little car, her little runner around the kitchen and pull things down and try to eat them, so I'm spending a lot of time running around trying to stop my child eating blu tac or paper," she said.

The 33-year-old presenter confessed to not having a strict dieting regime but said that she watches what she eats for her children.

"I'm not going to pretend I sit and eat healthy, I can't pretend that at all, my wrappers are here. But I think I just don't deny myself anything for a long time. You know, all us girls, we worry about how our weight yoyo's," she said.

"I just think when you say the more you're not having something, the more you want something, so I'm just more careful these days. And also I have to watch what I eat when it comes to eating in front of Ava, because they don't always just pick up the message -- you teach them or tell them, but so much of it is learnt just from copying, just from imitation."

"I don't want her to be sitting there at breakfast seeing me babysitting a yoghurt, I want her to have a good breakfast so I have to set a good example first," she added.

Jessica Simpson has revealed that she is constantly basing her look on what her fans might like to wear.

The 31-year-old, whose collections of clothing and accessories have netted more than one billion dollars in sales, said that going into design was a "natural transition" for her.

"Every time I think I'm gonna be photographed, I wonder if somebody will see what I'm wearing, and if it'll help 'em put somethin' together, maybe for school?" People Magazine quoted her as saying.

That drive to inspire is what pushes the star to create, both in the workroom and in her own life.

"I always wonder if what I'm wearing will be something that people would compliment, or want to wear," she continues.

"I don't ever get ready just for myself, ever," she added.

Catherine Zeta-Jones' hair was so big as a teenager that she was forced to sit at the back of her classroom because she hindered other students' view of the blackboard.

The 42-year-old actress used to blow-dry her mane to mimic the styles worn by her favourite bands.

"I was into big hair in a big way. I was completely in love with Duran Duran and Haircut 100. My hair was so big that I had to sit at the back of the class in school because the other kids couldn't see the blackboard. I was working as a teenager in London theatre, but I was a New Romantic," Contactmusic quoted her as telling OK! Magazine.

Although the '80s were a heady time for many younger stars, the actress insists she never got to be too hedonistic as she was busy with her budding career.

"The 80s were just boring for me. Unfortunately I always seemed to be working," she added.

An exhibition in London has divulged the tricks Marilyn Monroe used for showcasing her distinctive looks and publicising her attractions.

The exhibition, organised at the Getty Images Gallery to mark the 50th anniversary of Marilyn Monroe's death, has analysed 66 largely unseen Monroe images from its 90 million-strong archive, plus new video footage and 12 of her most memorable outfits, the Telegraph reported.

"She always wore a bra to bed because she didn't want her breasts to sag," said London.

"Marilyn took to placing marbles in her bras, or she'd take three buttons...and sew the buttons together and place those inside her dress."

Some of the other tricks the actress used included shaping her nose, sharpening her cheekbones, making her eyes look more deep-set, arching her brows, and emphasising her heart-shaped face.

A plumper and fuller pout was created using five different varieties of lipstick and gloss: darker reds on the outer corners, lighter shades in the middle to lend dimension, with a highlighted cupid's bow and bottom lip.