The group is composed of seven members: Hyori, Yeonjae, Yewon, Jia, Yunju, Anna, and Yerin.

mimiirose means blooming like a gorgeous rose by comparing the petals surrounded by layers to inner and outer beauty.

[1] Some members have previously been involved in the entertainment industry prior to joining the group.

[3] On July 10, 2022, Jia announced through her personal Instagram that she would make her debut as a member of Yes Im's upcoming girl group Mimiirose.

On August 24, 2022 Im shared that the group were scheduled to debut 2-3 years prior, but was postponed indefinitely due to the COVID-19 pandemic.