Jenny Birgitta Laev Alfvén
Swedish YouTuber
Jenny Birgitta Laev Alfvén (born 2 March 1989) is a Swedish YouTuber. Her YouTube channel, Yumi (
@yumii), carries Swedish-language prank videos. It had about 203,000 subscribers in August 2024 and about 216,000 in November 2025.
Jenny Birgitta Laev Alfvén’s social media accounts
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