Frequently Asked Questions Who is the girl in the Diet Coke commercial? The girl in the Diet Coke commercial is Taylor Swift, a renowned American singer-songwriter. Find more information here What is the concept behind the Diet Coke commercial? The Diet Coke commercial aims to promote the refreshing and enjoyable experience of drinking Diet Coke while featuring popular celebrities like Taylor Swift. Find more information here Where was the Diet Coke commercial filmed? The Diet Coke commercial was filmed at various locations, including studios and outdoor settings. Detailed information about specific filming locations is not readily available. Find more information…