Ever since the famous film, The September Issue, came out, documenting the work that gets into a major Vogue number, we all know that the September number of a magazine is its most important of the year. It's when the year truly begins in fashion, with Spring-Summer Fashion Week and all the new trends. The personality on the cover plays a major role – but so does what they're wearing. So, let's have a look at who's wearing what on this year's September issues:

Elizabeth Olsen Dazed & Confused

Elizabeth Olsen covers the September Issued of Dazed & Confused. Image c/o Angelo Pennetta

10. Elizabeth Olsen in Dazed & Confused. The youngest of the Olsen sisters flaunts a MiuMiu coat and a widow's veil on the newest issue of Dazed&Confused. Oh, and she looks gorgeous. The photoshoot took place just before Elizabeth's off Broadway portrayal of Juliet and it shows the key styles of the upcoming season. The magazine was released a few days ago.

Sarah Jessica Parker Harper's Bazaar

Sarah Jessica Parker covers Harper's Bazaar September issue. Image c/o Terry Richardson

9. Sarah Jessica Parker in Harper's Bazaar. The former Sex & The City gal is still going strong at 48, when the famous show would have been 15. This year, she covers the September issue of Harper's Bazaar in a sequin cocktail dress by Marc Jacobs, and a slightly outdated pose that struck Terry Richardson's fancy. The mag is out on August 20th.

Lady Gaga V mag

Lady Gaga covers the September issue of V Magazine. Image c/o Inez van Lamsweerde and Vinoodh Matadin

8. Lady Gaga in V magazine. We've already told you that Lady Gaga is naked in the September issue of V. The singer, who is never afraid of a bit of controversy, is wearing Saint Laurent on the cover, showing just enough skin to make you wanna buy the mag, which will be out on August 29.

Blake Lively Elle China

Blake Lively covers the September issue of Vogue China. Image c/o Mei Yuangui

7. Blake Lively in Vogue China. One year after Gossip Girl wrapped up, Blake Lively is even more popular in the fashion world than she was back then. On the cover of Vogue China, she's wearing a Gucci gown with mesh and feathers. The actress is also the face of Gucci's fragrance, Premiere.

Kate Moss Esquire

Kate Moss covers the September Issue of Esquire. Image c/o Craig McDean

6. Kate Moss in Esquire. Kate Moss hasn't been on a men's magazine cover in 17 years, and the honor belongs to Esquire's September issue. The mag is already out in stores and it features the model in a menswear inspired blazer and a gem embellished body suit – super sexy.

Kate Upton Elle

Kate Upton covers the September issue of Elle. Image c/o Carter Smith

5. Kate Upton in Elle. The model keeps her bombshell status on the cover of Elle magazine this September. She's wearing a red Lanvin dress and talks about the stereotype of the stupid blonde models. “I’m always like, I’m about to pull something on you, and you’re so focused on thinking I’m dumb you’re not even going to know,” she says. The mag launches on August 20th.

Cara Delevigne W

Cara Delevingne covers the September Issue of W magazine. Image c/o Mert & Marcus

4. Cara Delevingne in W. The model is called “the anti-role model” and a “style rebel” by the magazine, who styled her in white Marc Jacobs separates. In her interview, the 20 year old says that her aspirations are to sing, make music and act. Cara also covers Vogue Japan this September.

Natalia Vodianova Harper's Bazaar

Natalia Vodianova covers the September issue of Harper's Bazaar UK. Image c/o Jean-Baptiste Mondino

3. Natalia Vodianova in Harper's Bazaar UK. This covers shows a bit of romance rather than edge – the model is wearing chic black and white Dior, and the mag calls her “fashion royalty” in the cover story. The issue is already out in the UK since August 6th.

Daria Werbowy Vogue UK

Daria Werbowy covers the September issue of Vogue UK. Image c/o Patrick DemarchelierNatalia

2. Daria Werbowy in Vogue UK. The 29 year old model got a tiny nose piercing for the September issue of British Vogue. While most magazines show off glamour on the cover, Daria is wearing plaid and a biker jacket here. The issue is out since August 5th.

Jennifer Lawrence Vogue

Jennifer Lawrence covers the September Issue of Vogue US. Image c/o Mario Testino

1. Jennifer Lawrence in Vogue. Not that this is the best picture of the bunch, but it's the one of most importance. Being selected by Vogue US for the September issue is a huge honor, and it shows that Jennifer is the it girl of the moment. The actress is wearing Calvin Klein Collection for her cover closeup.