Kellanova, Weber Shandwick win first-ever Grand Prix for Brand Experience & Activation CHICAGO, June 21, 2024 /PRNewswire/ -- Kellanova's Pop-Tarts brand earned a top honor at the 2024 Cannes Lions International Festival of Creativity Thursday, winning the first-ever Grand Prix for its Edible Mascot activation.  In partnership with Weber Shandwick, Florida Citrus Sports, Publicis, and others, The First Edible Mascot was a delicious move to place Pop-Tarts at the center of the broader snacking conversation i ...