Strike a Pose13 Best Fashion Instagrams of the WeekAlais Diop09.15.13Strike a Pose13 Best Fashion Instagrams of the WeekRihanna shows off her penis purse, Karlie Kloss gives a backstage peek at Ralph Lauren, a Rodarte fangirl birthday cake, and more of the week's best from the beautiful people.Alais Diop09.15.13 8:45 AM ETvia Instagram13 Best Fashion Instagrams of the WeekRihanna shows off her new penis purse, Refinery 29 offers a backstage look at Thom Browne, and Garance Doré gives advice on what to do on a bad face day. Plus, more of the week's best fashion Instagrams. @cocorochaCoco Rocha"Mother @PatMcGrathReal is not only a master of makeup but a master of the #photobomb!" wrote Coco Rocha while backstage at Max Factor. The model, with her punk haircut and spiked shoulders, proves once again that there's always time for a fun selfie, even backstage. @badgirlririRihannaOn Wednesday, Rihanna proved her Instagram name @badgalriri is on point. The singer proudly showed off her new gold and green Vivienne Westwood penis clutch in python, thanking her "Vivienne Westood family" and repeatedly using the hashtag "#cockclutch." @refinery29Refinery29The zombie trend has arrived! Refinery29 went backstage at Thom Browne's asylum-themed show to capture all of the crazy, nutty haircuts and vampire-like makeup. @mmmargheritaMargherita MissoniMargherita Missoni announced the birth of her first baby, Otto Hermann Amos, with racing driver husband, Eugenio Amos. Missoni posted the picture of an adorable blue knitted sweater that reads, "Hello! Finally! #ottohermann." The newborn's name is a tribute to Margherita's grandfather, Ottavio Missoni, who passed away this year. @rachelzoeRachel ZoeRachel Zoe calls Diane von Furstenberg "the goddess" as she "[dances] down the runway at the end of her show," wearing a DVF safari-inspired dress and looking flawless as usual. @wesleynaultWesley NaultFashion designer Wesley Nault is proud of his French bulldog. As a matter of fact, he brings him to NYFW shows with a striped bow tie. The dog poses in front of Lincoln Center for his "Fashion Week Street Style: #thekugsgoestonyfw." @pnemcovaPetra NemcovaModel Petra Nemcova coordinates perfectly with the streets of New York. Her all-blue ensemble of an Hervé Léger dress and Prada bag match with cars in the background. @papermagazinePaper magazineMade Fashion Week at Milk Studios got transformed into a cyberspace atmosphere with shiny blond haircuts, bright makeup, and expressive eyebrows for The Blonds fashion show. Paper magazine caught an interesting moment backstage as models were chatting with eccentric silver and multi-colored outfits right before the show. @joannahillmanJoanna HillmanHarpers Bazaar Style Director Joanna Hillman was "#chillingfrontrow" with a puppy, who seemed to have other interests than the J. Mendel show on Wednesday. @karlieklossKarlie KlossThanks to model Karlie Kloss, we got a sneak peek at the Ralph Lauren spring/summer 2014 show before it started, while models were casually chatting backstage wearing VERY colorful outfits. @jxxsyNatalie Joos"If it ain't stiff then it ain't no use to anyone," says the slogan on this funny and very true vintage T-shirt that Natalie Joos, founder and writer for the blog Tales of Endearment, captured in her "Personal Muse" section. @officialrodarteRodarteThe Rodarte family celebrated co-founder Laura Mulleavy's birthday on Sept. 10, right after the label's runway show. For the occasion, Mulleavy received a customized birthday cake with the two faces of Wayne's World from model Madisyn Lynn Ritland. @garancedoreGarance DoréBlogger and illustrator Garance Doré gives us advice on how to hide our tired faces to the world, especially during fashion week madness, with this Steven Alan "cool giant hat."