LONDON, United Kingdom — This week, Francisco Costa and Italo Zucchelli exited Calvin Klein, paving the way for the much-rumoured arrival of Raf Simons. Could this be a chance for the brand to rethink its entire creative and business structure? Meanwhile, former YSL designer Hedi Slimane, who says he plans to spend more time in New York, was spotted at the Mayhoola for Investments offices in Doha, prompting speculation that the designer aims to launch his own label. Given the continued success of Saint Laurent, Kering's star performer, Slimane should have no trouble finding backing.

So who's buying all those Vetements DHL t-shirts? "What we are witnessing is the rise of the fashion hipster — a new consumer class whose purchasing habits are not driven by the notion of luxury, but by irony, camp, and insider humour," argued Eugene Rabkin… Want to excel on Instagram? Eva Chen has some advice. Catch up on these stories and more with BoF's Week in Review.

1. Costa and Zucchelli Out at Calvin Klein, Raf Simons to Take Reins?

Francisco Costa (L) and Italo Zucchelli (R) | Source: Getty Images

The move is part of a new global creative strategy, unifying all Calvin Klein brands under one creative vision, and paves the way for Raf Simons to take the reins, an appointment that has been widely rumoured for several months.

2. The Curious Case of Raf Simons at Calvin Klein

Raf Simons and Calvin Klein | Source: Courtesy/Wikimedia Commons

The rumoured arrival of Raf Simons at Calvin Klein presents an opportunity for the brand to rethink its entire creative and business structure.

3. Instagram's Eva Chen: 'It's Not a Numbers Game'

Eva Chen | Photo: Jeff Thibodeau/Instagram

How can fashion brands excel on Instagram? BoF spoke to Eva Chen, Instagram’s head of fashion partnerships, to identify five principles.

4. How Hedi Slimane Presaged Fashion's Instagram Obsession

Photo: Hedi Slimane | Courtesy: Document Journal

BoF brings you an exclusive excerpt from a conversation with Hedi Slimane on his digital photographic Diary and decision to spend more time in New York, courtesy of Document Journal.

5. Op-Ed | Offline Escape and the Future of Retail

Coachella Valley Music and Arts Festival 2015 | Source: Coachella/Youtube

The success of festivals like Coachella shows people crave physical experiences. Filling stores with screens is fundamentally misguided, argues Doug Stephens, founder of Retail Prophet.

6. Op-Ed | Sustainable or Superficial?

M.I.A stars in "Rewear It," the campaign video for H&M's World Recycle Week 2016 | Source: HM

Fashion’s failure to move beyond the most easily achievable — and easily marketable — sustainability issues puts it behind other sectors, argues Lucy Siegle.

7. Op-Ed | The Rise of the Fashion Hipster

Photo: Nabile Quenum

Catering to the fashion hipster — whose purchases are driven by irony, camp and insider humour — risks making promising brands the flavour of the day, argues Eugene Rabkin.

8. Concert 'Merch' Comes of Age

Merchandise from Rihanna’s Anti tour, Justin Bieber’s Purpose tour and Kanye West’s the Life of Pablo album | Photo: Richie Talboy and Lucas Lefler for BoF

As concert 'merch' becomes a more important part of their business models, pop stars like Justin Bieber, Kanye West and Rihanna are upping their game.

MARKET MOVEMENTS

Kering Misses Estimates, YSL Still Star Performer
Kering SA reported first-quarter revenue that trailed analysts' estimates as slowing tourism flows weighed on demand in Europe.

Ferragamo Says CEO Norsa to Leave Post by End of 2016
Salvatore Ferragamo's chief executive Michele Norsa will leave his post by the end of the year after a decade at the helm of the company.

Versace Sees Growth Slowing in 2016, Chief Executive Says
Versace's cautious outlook comes after several luxury groups including LVMH, Richemont and Burberry posted weak first-quarter sales.

Under Armour's Quarterly Revenue Jumps 30 percent
nder Armour Inc posted a 30 percent jump in quarterly revenue, helped by strong demand for its sports apparel and launches of new running and basketball shoes.