Rooney Mara

Plus, you're paying more for bags than men. Surprise!

This week had everything: Yellow, ombré, sparkles, bare midriffs...

On Mara, black is anything but basic.

And if you ask Sky Ferreria, the perks of being a fashion campaign star might not be as great as you think.

Here are the beauty trends that made us say, "Ooh!", "Um...," and "WTF" in 2013, as well as our predictions for their longevity.

Aside from Kristen Wiig's pose in the photo above, there are few things we love more than a Rooney Mara red carpet moment.

Which was our favorite J-Law look of the week? Find out.

Ready to see Kate Moss twerk? The supe will apparently be busting out her booty moves for Paul McCartney's upcoming music video, also starring Tom Ford, Lily Cole, and OMG JOHNNY DEPP (P.S. Kate + Johnny 4-ever). {London Evening Standard} Jennifer Lawrence is next-level gorgeous in her Dior Magazine spread and the cover of Elle France's October issue. {Fashion Gone Rogue & HuffPo} Kanye West's entire Yeezus tour wardrobe is comprised of custom Maison Martin Margiela. Yep, including those ripped leather pants. {GQ}

This week's best dressed ladies were all about simple elegance. We love Carey Mulligan's unfussy, strapless chartreuse Dior (a rare experimentation with color for the actress), as much as Kate Moss and Allison Williams' more subdued black numbers. On the edgier side of the spectrum were Rooney Mara in Proenza, Elizabeth Olsen in Chloé, and newcomer Lupita Nyong'o in Prada. Click through for all that and the rest of this week's best dressed.

No question about it, 2013 was the summer of the crop top. Everywhere you looked--from music festivals to the sidewalk to the red carpet--celebs were set on baring their concave abs to the world, and the world was more than happy to let them. Take a look.

Keri Russell's envy-inducing mane may be her signature, but she's been wearing some pretty flawless things on her press tour for Austenland, including this Stella McCartney jumpsuit. Adding to the perfection of this week's best dressed list is Rooney Mara, looking effortlessly chic in Calvin Klein, Diane Kruger winning us over yet again in Carven, and Lily Collins, who continues to impress us with her risk-taking choices. Click through for all that and the rest of this week's 10 best dressed!

Sixteen years after her tragic death, Prince George's grandmother, Princess Diana, is still making headlines. Here she is covering Vanity Fair's September issue. {Vanity Fair} Heidi Klum actually gets to say more in her native tongue than auf wiedersehen! in her new ad for a German mascara. {HuffPo} Penelope Cruz is making her directorial debut in a short film for L'Agent, the Agent Provocateur line she designed with her sister Mónica, starring both her super-pregnant sister and husband. {WWD} Victoria Beckham says she has a new Victoria, Victoria Beckham girl. Is she anything like the Victoria Beckham girl? Has Victoria Beckham become the Victoria, Victoria Beckham girl? Is anyone confused? {Grazia}