Too skinny? Too young? Or both? A model on the runway at Louis Vuitton's Fall/Winter 2009 show. Photo: Catwalking/Getty Images

Over the weekend, Telegraph UK reported that British Vogue's editor-in-chief Alexandra Schulman sent a letter to major international design houses including Prada, Versace and John Galliano denouncing the size zero sample dresses the designers have been sending to the Vogue office.

In the letter, Schulman blames the design houses for increasingly small clothing -- calling the garments "miniscule" -- and for forcing the magazine to hire models with "jutting bones with no breasts or hips." To compensate, the magazine is now reportedly retouching models so they actually appear larger.

Many fashion insiders have praised Schulman. Hilary Alexander, Telegraph UK's fashion director stated, "I totally support Alex and addressing this issue is long overdue. Her call now needs to be backed by all the other glossy magazine editors ... One lone voice will not be enough."

But the designers were quick to react. Guardian UK reported that leading designers have defended themselves by saying that it is all a vicious cycle and that agency models from which they have to choose are all about the same size.

Sarah Shotton, head designer at lingerie brand Agent Provocateur, tells Guardian UK that agencies send them "girls so thin that we have to ask them to leave."

So who's to blame? Sure, it's easier to point the finger at someone else, but the demand for smaller models is a complex issue that has been on and off the radar since the 90s.

During Fall/Winter 09/10 Paris Fashion Week, the models were so young that they still had the lanky proportions of youth.

While Schulman's letter is a huge step in the right direction, perhaps the issue is a combination of weight and age. After all, if the industry keeps hiring models that are too young to have developed hips or breasts, then it's definitely part of the problem. Tell us what you think.