Wang's $8,000 Colour-Change Coat

Alexander Wang´s latest collection is available to pre-order already from Moda Operandi- giving us an early insight into what it costs to create a coat out of heat-sensitive (or, as Wang calls it, "thermo-reactive") fabric.

The coats - which start off a dull green-brown, but become a vibrant yellow, lime, blue or purple when exposed to heat - will retail at $7,995, with a $3,998 deposit required to pre-order.

Alexander Wang

Sported by Karlie Kloss, Jacquetta Wheeler, Joan Smalls, Kati Nescher and Jourdan Dunn on the catwalk, the coats - already intriguing - piqued even more interest when the high-tech fabrication was revealed. The heat-sensitive skirt and top suit - worn by Hilaru Rhoda, daria Strokous and Anne V at the show - begin at $2,550, and all look similar until their underlying colour is revealed.

But, Wang fans, do not despair. The shin-guard mules - probably the shoe that most editors have been dreaming of since the shows began - will retail at a comparatively affordable $995, while the pocket-covered tunics that opened the show are priced from $895. Although you may just have to be content with their original colour.

Milan Fashion Week Latest

This weekend sees some of Milan's biggest names take to the catwalk, from Dolce & Gabbana to Missoni, but today we're still talking about last night´s Prada show - always one of the most influential collections of the season. For autumn/winter 2014, Miuccia Prada gave us colourful shearlings, geometric prints and sheer chiffon trimmed with Mongolian fur - so we can expect to see high-street derivations in their multitudes next season.

Miuccia Prada

Today's line-up starts with Les Copains, in which former Hugo Boss and Salvatore Ferragamo designer Graeme Black will make his debut as the label's new creative director, and ends with Versace - an excellent way to begin any weekend. Prepare to see Donatella's strong, sexy women hit the catwalk in some of the most glittering and powerful creations you're bound to see this season. Alexa Chung also joins the panel of the International Woolmark Prize, the final of which takes place at the city's La Triennale Museum today. Chung will join fashion luminaries including Frida Giannini and Franca Sozzani to decide which of the finalists should scoop the prestigious prize.

Bottega Veneta is up first on Saturday, followed by Giorgio Armani's latest protégée, Au Jour Le Jour, the second emerging Italian label that he´s chosen to show in his catwalk Teatro. The first designer he offered his mentorship to, Stella Jean, has gone onto achieve great success, now with international stockists - so we look forward to seeing more from Armani's latest design stars. Au Jour Le Jour is known for its playful cartoon-like prints, a look that starkly contrasts with Mr Armani's. Then to Roberto Cavalli and the glamorous flamboyance that he has built his label name upon, before polar opposite Jil Sander - where we can expect plenty of clean lines and understated versatile classics - and ending with Pucci, always an array of exotic colourful prints and embellishment.

Sunday gives us three Italian style favourites - Marni, a label that consistently punctuates the wardrobes of fashion editors; Missoni, one of Milan's ultimate fashion family dynasties; and finally, Salvatore Ferragamo, a brand known for its luxurious, elegant staples.

Cavalli: Stop Copying Me, Kors

Roberto Cavalli has launched another attack on fellow designer Michael Kors, accusing the American of copying his designs - an allegation that he first levelled in December 2013.

"Mr Michael Kors, he copies everything!" Cavalli told Miami's  Haute Living magazine. "It's really a scandal and nobody has the courage to say anything. It's really not fair."

Roberto Cavalli

Kors, known for his amiable manner and many fashion friendships, has remained silent on Cavalli's comments - and the Italian hasn't expanded on which pieces he believes have been plagiarised.

The American designer  recently became a billionaire,following his company's Initial Public Offering, while rumours of a Cavalli IPO have never come to fruition - with the label instead in talks to sell a minority share.

Rihanna To Launch Own Label

Rihanna wants to launch her fashion label soon. Although the singer has revealed little else about what the line might involve, she thinks that fashion has played a large role in the success of her career.

"It's not all down to my voice," she said. "There's people with way more talent than I when it comes to singing; bigger voices. But people want to know who you are. Fashion is a clear indication, a way to express your attitude, your mood."

Rihanna

Rihanna has created collections for two fashion labels before - her first was for Emporio Armani Underwear and Armani Jeans in 2011, and the second for high-street brand  River Island, which she co-designed with Adam Selman.She is currently the face of Balmain and counts an impressive list of designers as fans, from Tom Ford and Peter Dundas to Alexander Wang.

"There is no one else that excites me more," Wang told  American Vogue."It's raw, it's smart, it's everything pop culture needs to move forward."

Rihanna Sued By Photographer

Rihanna is being sued by photographer Philipp Paulus for allegedly plagiarising his images for her 2010 S&M music video. Paulus claims that the video mimics the set, production and photos from his fashion series, Paperworld, in which a model appears held to a wall by plastic, taped with large X marks - a scene that also features in Rihanna's S&M.

The New York-based German photographer has filed for an injunction and is seeking damages, after the issue couldn't be resolved privately. The case will come to the court in Stuttgart, Germany, on April 15. If Paulus wins, Rihanna's video could be banned from YouTube and television.

Copycat Rihanna?

This is the second time Rihanna has faced legal action from a photographer, after David LaChapelle sued her in 2011 for $1 million for supposedly duplicating his imagery in the same video,S&M.

Burberry’s New Girl: Watch This Face

As Burberry´s first ever Indian campaign star, Neelam Johal hopes to pave the way for more ethnic diversity in fashion. The 18-year-old - who hails from Coventry - will hit the catwalk for the brand during its London Fashion Week show today.

"It makes me feel great knowing that I've opened doors for other girls like me," Johal told us. "It felt - and still feels - amazing."

Johal was first scouted when she was 13, then signed with Models1 when she was 14, although she didn't start modelling in earnest until she finished school. She was always interested in fashion, although originally not in the area she has ended up.

"From about the age of 14 to 16, I had my heart set on becoming a fashion journalist," she said. "I ordered so many books to try and educate myself on the industry; I still have the books now. Fashion is a major aspect of my life, not just because of my job, but because I have a genuine interest in it."

Neelam Johal

She made her catwalk debut for Burberry last season, and  a campaign shot by Mario Testino, soon followed. In it, Johal appears alongside Jamie Campbell Bower, Malaika Firth and Jean Campbell.

"I'll never forget the moment when my agency told me I got the campaign," she recalled. "They called me in after a casting and told me I had a go-see at the agency, but really I didn't and my booker was just waiting for confirmation that I'd got the campaign so that she could tell me to my face! When she broke the news to me, I started crying and my whole agency was crying with me and clapping. It just felt too good to be true, it still does."

Although she loves working with Burberry (especially on-set mealtimes, in which Christopher Bailey, Testino and the campaign crew eat together), Chanel, Givenchy, Hermès, Balenciaga and Kenzo are next on her model wish list. An acting career is also a strong possibility.

"I've been asked to go into Bollywood a lot, which I'm open to," she said, before adding, "but maybe in a few years' time because I feel like I'm only just getting started with modelling and I have so much more to achieve."

When she isn't mixing with fashion's top names, Johal can be found cooking or reading at her family home in Coventry, or at a rap concert. Perhaps tellingly, Naomi Campbell is her all-time model hero.

"In my opinion, she has paved the way for models and shown us that you can make a career out of this and branch into different avenues," she said. "I also admire her because she has broken down many barriers within modelling, and had an incredible career."

London Fashion Week Arrives

London Fashion Week  has arrived - a five-day extravaganza known for producing some of the world's most exciting and dynamic fashion talents. Over recent seasons - and especially under the watchful eye of fashion powerhouse Natalie Massenet - the city's reputation has slowly changed from being home to creative, but often commercially unsavvy, designers, becoming a place that nurtures emerging talents and puts them on a global stage. The industry is now worth an impressive £26 billion to the British economy.

Two of the season's big tickets will be Christopher Kane and JW Anderson, both of which have received investment from luxury conglomerates LVMH and Kering respectively. Burberry and Tom Ford will once again draw big crowds, as two of London's best-known names. Mulberry has already got the fashion press talking with its Sunday photo call, at which campaign star Cara Delevingne will unveil a "creative project", with whispers she could be the latest star to have a bag named after her. With no creative director yet appointed at the helm, the label will not hold a catwalk show this season - instead hosting an intimate dinner for friends of the brand.

We look forward to seeing what the city's creative mainstays - Erdem, Mary Katrantzou, Jonathan Saunders, Roksanda Ilincic and Henry Holland - have in store, a group who have progressed from being the new generation to lucrative businesses, embracing new chapters in their careers - with many opening standalone shops in the coming months. We'll also be keeping a firm eye on the Peter Pilotto catwalk, this year's BFC/Vogue Designer Fashion Fund winner.

New to the schedule this season are Mother of Pearl, Whistles, Joseph and Marks & Spencer - the latter of which will unveil its autumn/winter 2014 Best of British collection with a series of presentations at Somerset House on Monday. Joseph celebrates the 25th anniversary of its famed Fulham Road store this season, launching a capsule collection created by labels including Giles, Balmain and Jonathan Saunders.

Indigital

So which new names to take note of? Thomas Tait's complex simplicity is still causing a stir in fashion circles, while Simone Rocha - who won Best Emerging Womenswear Designer at the 2014 British Fashion Awards - is expected to impress again with her strong, contemporary take on romance. For eveningwear, we'll look to Barbara Casasola - whose floor-length dresses are truly lessons in modern elegance.

If London Fashion Week has already whet your shopping appetite, stop by at Hardlyeverwornit.com´s pop-up store at 29 Duke Street, which will be selling pieces donated by fashion editors to raise money for charity.