Dark skin was once a controversial issue in the fashion world.

Advocating diversity has always been the eternal label of the fashion circle, but in fact, it cannot be denied that there is still unfair treatment of black models, take fashion week as an example, many black models don't even have an agency, which makes them have little experience, which makes it harder for them to walk on the show. Many brands have come under fire for using less or less black models.

For example, in recent years, you can hardly see black models on the hot Vetements show, Demna Gvasalia's first show for Balenciaga did not see black models, such a choice actually made the designer quite criticized.

Raf Simons period of Dior in the 2013 autumn/winter haute couture show appeared eight black models, which is a huge change, because in the previous seven collections presided by Raf Simons, there are no black models.

While there are still unfair treatment, as beauty standards gradually moved toward diversity, models of color gradually entered the fashion industry from 1970 onwards, with more black models walking the fashion week runways, appearing on the covers of major publications, and appearing in endorsement roles for top fashion brands. Most notably, Iman Abdulmajid in the 1970s, Naomi Campbell in the 1980s and 1990s, and Liya Kebede in the first decade of the 21st century are a powerful black force.

Iman Abdulmajid, for example, may not be familiar to you, but she is a lot of things -- host, businesswoman, wife of David Bowie, and most notably, legendary supermodel. Yves Saint Laurent considers her a goddess and the African Queen collection is a gift to her.

The CFDA gave her its "Fashion Icon" award -- "I don't remember who came up with Iman's name at the meeting, and everyone in the room was like, 'Wow,' and she was unanimous."

"Recalls Diane von Furstenberg, president of the CFDA. Now Iman Abdulmajid has stepped away from the catwalk and the camera, focusing on her humanitarian work, doing charity work and speaking out for black models.

Similarly, the iconic black model is Naomi Campbell, who made her stunning debut at Yves Saint Laurent in 1988 and was already a supermodel, a "black pearl" of the star-studded supermodel era.

It has been 20 years since we saw Malaika Firth as the face of Prada's Autumn/Winter 2013 campaign, the second black face of Prada since Naomi Campbell in 1993.

From Chanel to Gucci to Versace, she has won numerous high-value brand advertisements.

Joan Smalls will seize every opportunity to use her status as a public figure and interview opportunities to call on the fashion industry to value models of color. Her success also proves that "beauty can have multiple standards".

One representative of the new generation of supermodels is Imaan Hammam, who was hand-picked by Riccardo Tisci for the exclusive Givenchy show during the 2014 Spring/Summer Paris Fashion Week and was an important opening model. And Riccardo Tisci has always loved black culture.

The Egyptian-Moroccan Imaan Hammam, who grew up in the Netherlands, is exotic in a different way.

"I think girls my age still have a set of ideals of beauty in their minds, like thin bodies, white skin, even the size of the features... It's hard to shake that. But as a public figure, I hope that through my own efforts, I can more or less play a positive role in changing the situation."

The fashion industry is also actively working to improve this artificial barrier, regardless of color or gender - it is contributing to the rise of black models in different ways, perhaps not rapidly, but little by little.

Black culture has always been fascinating.

In addition to supermodels, designers are also drawing inspiration from black culture, and the fashion world, with the likes of Alicia Keys, Rihanna and Beyonce, is on the rise.

As for the reason for the rise, more and more people are beginning to understand that beauty has never been a fixed standard, skin color should never be a resistance, no matter what, we should all be proud of our innate characteristics.