is a Japanese idol and a member of the girl group Momoiro Clover Z. She is the former leader of the group, before leadership was passed to Kanako Momota, and her signature color in the group is purple.
Takagi was born in Kanagawa Prefecture. In April 2012, she became a DJ of her own radio show called Takagi Reni no King of Rock.
On November 6, 2022, Takagi announced her marriage to Shingo Usami., a professional baseball player for the Hokkaido Nippon-Ham Fighters. In December 2023, Takagi and Usami announced they had divorced.