Ad Biz 5 Biggest Posts of the Past 5 Days By Erik Oster on Dec. 18, 2015 - 11:18 AM Pre-Christmas Layoffs at Publicis New York CEO Sophie Kelly Leaves The Barbarian Group ECD Fabio Costa to Resign From His Position at TBWA\Chiat\Day Advertisement TBWA and Miller Lite Wore the Season’s Biggest, Ugliest Sweater mcgarrybowen Makes Major Changes to U.S. Leadership Team