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COSMO Talk profile timeline

SeoYeon

Current nickname: 윤서연

Initial COSMO Talk profile picture and nickname: SeoYeon.
July 1, 2026
SeoYeon updated her COSMO Talk profile picture.
July 14, 2026
SeoYeon changed her COSMO Talk nickname to 윤서연.
July 14, 2026
SeoYeon updated her COSMO Talk profile picture.
October 3, 2026