Beyonce is joining the ranks of the world’s many singer/songwriters turned fashion designers (a roster that includes Beth Ditto and Kim Gordon among others). And she’s doing it with the help of her fashion designer/manager mom, Tina Knowles. The line in question is called Sasha Fierce for Deréon - the latter being Tina’s seasoned fashion operation, and the former Beyonce’s altar ego and title of her last LP - and will be marketed at the under-18 demographic. The collection “includes a full range of sportswear, outerwear, handbags, footwear, eyewear, lingerie and jewelry,” says Women’s Wear Daily and will retail alongside Deréon’s teen line, which is stocked at stores like Macy’s and Dilliards. And, according to Tina it’ll reflect the “edgier and trendier” vibe of Beyonce’s alter-ego’s “daring and outgoing attitude.”

He’s shot everyone from Charlotte Rampling and Thurston Moore to Victoria Beckham. Yet Juergen Teller seems to prefer life behind the scenes. The German photographer rarely gives interviews, but in light of a soon-to-be released Steidl tome documenting the photog’s last 20 years of ads for Marc Jacobs, Teller is speaking out. The Independent sat down with the iconic artist and fashion photographer to talk the past two decades of MJ advertising photos. Some of the best moments from the piece are after the jump.

YSL’s latest ads are out, and they follow suit with the brand’s supermodel-centric spreads from seasons past. For FW09, Stefano Pilati once again enlisted the help of photographers Inez van Lamsweerde and Vinoodh Matadin as well as famous face Christy Turlington. Seeing as in the last few years YSL’s ads have featured the likes of Naomi Campbell, Kate Moss, and Claudia Schiffer, it appears the French fashion house has officially been bitten by the supermodel comeback bug. However, rather than feeling dull as a result of the familiarity of the mannequins in question, the pared-down ads are charming as ever.

Stylist to the stars (turned reality-TV star herself) Rachel Zoe is following Gwyneth Paltrow’s stead. The birth-mother of bronzed/size zero/Starbucks-clad LA chic is launching a newsletter of sorts called “The Zoe Report.” While no word on the specifics of the soon-to-launch dose of “daily glamour” have dropped, Zoe’s freshly debuted namesake site, not surprisingly, proclaims, “it’s going to be bananas!” According to the sign-up process, subjects to be discussed by the maven of Hollywood style include: shoes, accessories, handbags, apparel, beauty, and lifestyle.

This year’s Costume Gala at the Metropolitan Museum in New York will go down in history as one of the more memorable. Kate Moss showed up in a matching turban and toga, Madonna made headlines for her LV-approved bunny ears, while supermodels boycotted on behalf of Azzedine Alaïa; not to mention, Rodarte’s after-party at subMercer produced one of the most high-profile fashion feuds in decades: Kiefer Sutherland head-butting Proenza Schouler’s Jack McCollough. But don’t expect the fashion faux pas or feuds to be replicated next year, says Fashion Week Daily. “According to two well-placed insiders, one very closely involved with the Museum, the 2010 Costume Institute Gala will be a much less splashy affair—a move the museum is said to welcome. The guest list will consist mostly of trustees and benefactors who purchase full-priced tickets instead of the designers, models and Hollywood types who once sat at their comped tables.”

The fashion industry has been abuzz for months about the upcoming documentary release, The September Issue, which follows Vogue editrix Anna Wintour, her cohorts, and her hordes of minions as they put together the magazine’s most coveted issue—its annual September installment. But according to Forbes, the issue itself, on which the film is (and arguably lives are) staked, falls short ... literally. The upcoming Vogue September issue boasts the least number of ad pages in years.

Jethro Cave (a.k.a. Jethro Lazenby) is fast becoming one of the most interesting faces to watch in the world of male modeling. The scion of legendary rocker Nick Cave surfaced on the scene last year with an impossible-to-miss look—namely, his half-shaved/half-long-locked coif that mimics it-girl Alice Dellal. At men’s SS10 Fashion Week, which just wrapped up in Milan and is well under way in Paris, Cave is proving his personal style to be as interesting as that shown on the runway.

Staging a fake wedding ceremony doesn’t exactly seem like the healthiest thing to do if you’re a couple not yet ready to take the plunge. But that’s exactly what musician/producer Mark Ronson and girlfriend Josephine De La Baume did for Jalouse magazine. Images from the faux nuptials grace both the cover of the rag’s July issue as well as an inside spread. And it appears a bandwagon of rockers joined in for the fun too: “the fake ceremony saw celebrity guests including British catwalk star Alice Dellal, New York rockers The Virgins and French band Neimo,” says The Fashion Spot.

Earlier this week, NPR talked to Lucy Kellaway, a London-based management columnist for the Financial Times, about a recession-induced trend of a “return of formal workplace wear.” In the broadcast, Kellaway argues that, rather than dressing down as a result of the downturn, people are by and large stepping up their sartorial repertoire. She notes, at a recent conference where the “previous year [people were] looking really slouchy in chinos and polo shirts, this year every single one of them was in a jacket and a tie.” So why the sudden push to for ironed shirts and finely cut suits? “All of us are trying to cling on to our jobs ... you feel more professional if you’re not wearing the same clothes you wear to lounge about while watching TV in the evening,” she argues, citing that she believes the idea of casual wear breeding creativity to be a total misapprehension.

A number of trends have been taking shape on men’s SS10 runways—peek-a-boo by way of punched holes (at Prada) and transparent tops (at Calvin Klein), cropped trousers (across the board) and short shorts (ditto) included. But one of the most fashion forward styles seen thus far is the harem pant for men - specifically versions MC Hammer himself might think hang a little low. “YSL Homme, Issey Miyake and Alexis Mabille, Balenciaga took it to the most extreme proportions,” notes Frockwriter.