Strike a PoseNatasha Poly, James Franco & More Fashion InstagramsClaire Stern04.27.13Strike a PoseNatasha Poly, James Franco & More Fashion InstagramsKarl Lagerfeld’s Amsterdam store opens, Anna Wintour matches with Marc Jacobs, and more of this week’s most beautiful shots from the fashionable people.Claire Stern04.27.13 8:45 AM ETKarl Lagerfeld’s Amsterdam store opens, Anna Wintour matches with Marc Jacobs, and more of this week’s most beautiful shots from the fashionable people. Natasha PolyNatasha Poly boldly shared the intimate news of her pregnancy with her 66,000-plus Instagram followers in this photo of herself striking the prototypical pregnancy pose in a blue and white printed maxi dress. “❤ Baby On Board ❤,” she announced in the caption. James FrancoGucci uploaded this snapshot of its star model, James Franco, about to blow out his 35th-birthday candles at New York’s No. 8. The actor/writer/producer also celebrated another occasion that evening: the premiere of his and Christina Voros’s film The Director at the Tribeca Film Festival. Hilary RhodaHilary Rhoda posted this ethereal photo on Earth Day. The model has just been announced as a co-host of this year’s Met Ball red-carpet livestream, along with Vogue’s William Norwich. Karl LagerfeldChanel’s creative brain opened his own eponymous store in Amsterdam this week. The high-tech shop, located in the Negen Straatjes (“Nine Streets”) shopping district, is stocked with iPad minis so customers can scan the designer’s collection. The store carries men’s and women’s ready-to-wear, footwear, eyewear, and various accessories. Derek BlasbergThe Harper’s Bazaar editor at large celebrates another year in this populous Instagram. Blasberg, clad in a scarlet suit, has a fleet of fashionable birthday babes in tow, including Kirsten Dunst, Nicole Richie, Jessica Alba, and Rachel Zoe. He captioned the pic: “Happy birthday to ME!” Reese WitherspoonVogue uploaded this black-and-white photo of a dark-haired Reese Witherspoon donning Saint Laurent at the premiere of Mud in New York City. The actress made headlines this week when she and her husband, James Toth, were arrested in Atlanta. Suki Waterhouse and Cara DelevingneBFFAE? British model—and Bradley Cooper’s new squeeze—Suki Waterhouse uploaded this throwback snapshot of herself and a fresh-faced Cara Delevingne cuddling up in bed. Sofía VergaraThe Modern Family star promotes the launch of her new shapewear line in this Instagram of herself modeling one of her pieces: a leopard-print bustier. The collection, to be sold at Kmart, will also include bodysuits, briefs, and boy shorts. Anna Wintour and Marc JacobsTwinsies! Diane von Furstenberg snapped this pic of Vogue HBIC Anna Wintour and Marc Jacobs donning matching black velvet floral-appliqué coats from Prada’s spring 2013 collection. Lena Dunham“Dirty Dancing: Havana Nights,” wrote Girls creator Lena Dunham under this selfie of herself wearing a graphic print dress by Vena Cava. Dunham professed her love for the label in 2011 in a short essay on its blog. Mark Badgley and James MischkaNewlyweds Mark Badgley and James Mischka of fashion label Badgley Mischka look dapper as ever in matching black suits and white shirts at a luncheon celebrating the 20th anniversary of the Women of Distinction Awards at the Waldorf Astoria hotel in New York City.