Mariana O’Kelly Leo Burnett Chicago welcomes a new creative leader, Mariana O’Kelly, who joins the agency as Executive Vice President/Executive Creative Director.  O’Kelly will be based in the agency’s Chicago headquarters and will report to Britt Nolan, President and Chief Creative officer. She will oversee a creative team of 25 and run the entire Kellogg’s portfolio … Continue reading Leo Burnett Chicago welcomes Mariana O’Kelly as EVP/ECD