Celebrity Star Studded: Best Parties This Week By Jonathan Borge Jonathan Borge Instagram Twitter Jonathan Borge is a writer and editor living in New York City. His writing has appeared in Glamour, Refinery29, Forbes, and PAPER, among other publications. Plus, he's held staff positions at Marie Claire, InStyle, and OprahDaily.com. Currently, he's the Senior Entertainment Editor at Bustle Digital Group's Elite Daily, where he oversees digital covers, features and profiles, freelance essays, and strategy for the site's TV/Movies and Celebrity and Music sub-verticals.He primarily writes about pop culture and style, and has a passion for telling LGBTQ+ and Latinx stories. When he's not working, he's likely waiting for Lady Gaga to announce her next tour. InStyle's editorial guidelines Updated on January 27, 2017 @ 04:30PM Pin Share Tweet Email Photo: Victor Boyko/Getty What's picturesque, romantic, and chic all over? The City of Love, my friends. That's where the most insider-y of fashion insiders spent their week for a) the spring 2017 menswear shows b) Paris Couture Fashion Week or c) both. Tilda Swinton lent her sleek, modelesque aesthetic to the camera at a celebration of Berluti Creative Director Haider Ackermann's latest collection for the boys, where the designer looked dapper in a sleek sports jacket and Swinton shone with her signature bold red lip. The word party doesn't start contain a 'B,' but it may as well considering Balmain never fails to host a bash that defines fun. The fashion house's Olivier Rousteing celebrated his collection at El Pompon Magnifico, where he welcomed an exciting mix of notables which included photographer Ellen von Unwerth, model Grace Bol, race car driver Lewis Hamilton, and Sofia Richie. If the boys of Paris were in search of a golden ticket, all treasures lead to Balmain. Of course, we can't forget the world of couture. Following Dior's magnificent runway show, Dior Beauty ambassador Bella Hadid grabbed her troops and spent the evening at Dior's masquerade ball, where she #nailedit in a sheer pastel blue number alongside Kendall Jenner, also in sheer and also sporting a fresh set of micro bangs. The celebrity sightings weren't few at the Sundance Film Festival, where Lily Collins happily promoted To the Bone from one screening to the next. RELATED: 9 Celebrity Hair Makeovers of 2017 Scroll down for the hottest parties of this week. 01 of 13 Sofia Richie Victor Boyko/Getty at Balmain's spring 2017 menswear after-party. 02 of 13 Cindy Bruna Victor Boyko/Getty at Balmain's spring 2017 menswear after-party. 03 of 13 Grace Bol Victor Boyko/Getty at Balmain's spring 2017 menswear after-party. 04 of 13 Ellen von Unwerth Victor Boyko/Getty at Balmain's spring 2017 menswear after-party. 05 of 13 Zoey Deutch Michael Kovac/Getty at Park City Live resents The Hub at the 2017 Sundance Film Festival. 06 of 13 A$AP Rocky and Bella Hadid Victor Boyko/Getty at Dior's Bal Masque Party. 07 of 13 Kendall Jenner and Bella Hadid Bertrand Rindoff Petroff/Getty at Dior's Bal Masque Party. 08 of 13 Alexandre Vauthier and Bella Hadid Julien M. Hekimian/Getty at Swarovski's Alexandre Vauthier cocktail and dinner party. 09 of 13 Lily Collins Randy Shropshire/Getty at AT&T's The Lift at the 2017 Sundance Film Festival. 10 of 13 Tilda Swinton and Haider Ackermann Bertrand Rindoff Petroff/Getty at Berluti's spring 2016 after-party. 11 of 13 Natalia Vodianova and Marisa Berenson Swan Gallet/WWD/REX/Shutterstock at Berluti's spring 2017 after-party. 12 of 13 Alfre Woodard and Elle Fanning Vivien Killilea/Getty 13 of 13 America Ferrera Randy Shropshire/Getty at AT&T's The Lift at the Sundance Film Festival.