The official idol clothes worn by the original 9 HOLOSTARS members for live events and in certain promotional artworks, originally designed by Nozaki Tsubata. The uniform first debuted at the 1st ACT "JOURNEY to FIND STARS!!" live concert in 2021, and is currently considered the standard outfit for the group's idol activities.
Since UPROAR!! has a different uniform and HOLOSTARS English hasn’t received theirs, artists may come up with their own interpretations when depicted the members from those groups in this idol outfit.
See post #5235452
It consists of a long-sleeved white collared shirt, white pants, an asymmetrical white jacket that has longer hem on the left along with notched lapels, sleeve cuffs and is cross-laced in the back, a double-breasted black vest, a yellow sash, a side capelet, neck ribbon, award ribbon and black lace-up knee boots. The color of the capelet, neck ribbon, award ribbon and accent colors differ to match each talent's theme color. They also have accessories unique to each of them (post #5235525):