LONDON, United Kingdom — BoF compiles the most important professional moves of the week.Mark Sebba Joins Eloquii Mark Sebba has been appointed as an independent board member and advisor to plus-size women's fast-fashion retailer Eloquii. Previously, Sebba served as chief executive at the Net-a-Porter Group from 2003 to 2014 and currently holds several other board positions outside of fashion.Jenna Lyons Exits J. Crew J.Crew's Jenna Lyons is exiting the company after 26 years with the company. J.Crew women's head of design Somsack Sikhounmuong, who previously led sister label Madewell's design, will be promoted to chief design officer, effective immediately. Lyons will stay on as a creative advisor until the end of her current contract, which expires in December 2017.Josh Shulman Joins Coach Coach has named Joshua Shulman as president and chief executive, and will join the company on June 5, as part of a wider move to focus on its long-term goal of diversifying its brand portfolio. He will join the company from the Neiman Marcus Group, where he currently holds the role of president of Bergdorf Goodman.Elle UK Names Editor-in-Chief Elle UK has named Anne-Marie Curtis as editor-in-chief, effective immediately. Curtis, who formerly held the role of fashion director at the magazine, succeeds Lorraine Candy, who left the title in November to join British newspaper The Sunday Times as luxury content editor and editor-in-chief of its Style Magazine.T Magazine Names EditorHanya Yanagihara has been appointed as editor of T: The New York Magazine, succeeding Deborah Needleman. The critically-acclaimed author left the magazine in April 2016 after serving as deputy editor.Balmain Appoints CEO Balmain has hired Massimo Piombini as chief executive officer, effective immediately. Piombini, who succeeds Emmanuel Diemoz, was already a member of Balmain's board of directors and previously held the role of worldwide commercial director at Valentino.Mario Testino+ Appoints Global Development Director Brigid Walsh has joined Mario Testino+ as global development director. Walsh hails from Condé Nast, where she worked for 10 years, most recently as executive director of communications, partnerships and special events for American Vogue.To explore exciting fashion industry career opportunities, visit BoF Careers, the global marketplace for fashion talent.