Teresita Ssen Lacsamana Marquez, also known as Winwyn Marquez, is a Filipino actress, model, dancer, and beauty queen who was crowned as the first Reina Hispanoamericana Filipinas title in the Miss World Philippines 2017 pageant and eventually won the Reina Hispanoamericana 2017 title in Santa Cruz, Bolivia on 4 November 2017.
Winwyn was invited on Eat Bulaga! as a guest co-host starting on 24 August 2021, replacing Kakai Bautista to join fellow guest co-host MJ Lastimosa on the program. Winwyn was originally scheduled to appear for one week, but her stint was extended for two additional weeks. She concluded her hosting duties on 15 September 2021 and was replaced by Gabbi Garcia as the next guest co-host.