Also known as: ブライテスト・ショーケース, ブライテストショーケース, プリティエスト・ショーケース
An Official Alternate Costume from Idolmaster Million Live! Theater Days, worn by all 52 characters. It was released for the game's 7th anniversary.
Appearance
- Main appearance with skirt
- Main appearance with shorts
- Official Alternate Color
- Official Alternate Color
- Prettiest Showcase (Official Alternate Color)
- Prettiest Showcase (Official Alternate Color)