Strike a PoseFrom Karlie Kloss to Alexa Chung, The 11 Best Fashion InstagramsToby Milstein11.02.13Strike a PoseFrom Karlie Kloss to Alexa Chung, The 11 Best Fashion InstagramsKarlie Kloss does TRX in Sao Paolo, Coco Rocha balls so hard, and Alexa Chung beams as a proud author. Plus, more of this week's best Instagrams. Toby Milstein11.02.13 9:45 AM ETInstagram Karlie Kloss does TRX in Sao Paolo, Coco Rocha balls so hard, and Alexa Chung beams as a proud author. Plus, more of this week's best Instagrams. @cocorocha/InstagramCoco Rocha"Like a boss," is what the caption reads. In plaid pants and silver stilettos, Coco Rocha balls so hard. @chloe/InstagramChloéThe hot sister trio Haim performed at the Chloé party in LA and “set the night on fire.” Aren’t they just the coolest? @kyleeditor/InstagramKyle AndersonMarie Claire acceessories editor Kyle Anderson tells it like it is: "Take a chill pill." When it comes to Louboutin pill-popping, we're sure to become addicts. @chungalexa/InstagramAlexa ChungNothing feels better than penning a book and having it published, except maybe seeing it appear on a billboard in Times Square. A blissful Alexa Chung looks relieved and overcome with joy as her book IT shines in bright lights behind her. #Fame. @johnjannuzzi/InstagramJohn JannuzziThis is evidently what happens to hair when one "kicks a hornet's nest." John Jannuzzi of Lucky magazine gets into the Halloween spirit, showing off Editor in Chief Eva Chen as Lisbeth Salander of the Stieg Laarson series. @sheenasmith/InstagramSheena SmithFashon or comfort? The Big Bird shoe shows us that these aren't mutually exclusive. We'll take fluffy! @karliekloss/InstagramKarlie KlossKarlie knows best! When it comes to working out, why go for a sweaty, dungeon-like gym when you can exercise with a delightful view? The supermodel does an intense TRX session as she looks out over the city of Sao Paolo. @abanel/InstagramAnnabelle Dexter-JonesAnnabelle Dexter-Jones, rising actor and designer, misses her night as Marilyn. "It's disturbing that when I woke up I no longer looked like this... #posthalloweenemptiness." Nothing lasts forever, Annabelle. @derekblasberg/InstagramDerek BlasbergLittle NBA nugget. Margherita Missoni puts on a pair of NBA socks on her newborn, Otto, to "teach her son the importance of American athletics." Will he be the next Kobe? Jordan? He has big socks to fill. @anna_dello_russo/InstagramAnna Dello Russo...And then all of our jaws dropped. ADR is shocking on the regular with her outlandish outfits, so why did we expect anything less from this fashion all-star on Halloween? One strange bird, that Dello Russo. @luckymagazine/InstagramLucky MagazineSilly girls. As the caption reads, “This is what happens when you put @manrepeller, @evachen212 and @intothegloss in one room.” Now we know.