A series of costumes in THE iDOLM@STER SIDEM: Live on Stage! representing the outfits worn for the WORLD TRE@SURE events. Tag may also refer to the groupings of the event.

List of outfits

• WORLD TRE@SURE in France - A uniform evoking The Three Musketeers. Includes a blue capelet with white fur trim, a blue and white cavalier hat. Includes a rapier, a blue sash, white elbow gloves, and white knee boots.
• Worn by: Tendo Teru, Akuno Hideo, Akai Suzaku, and Kuzunoha Amehiko
• WORLD TRE@SURE in America - Overalls with a striped crop top and a boater hat, with striped socks, boots, a single fingerless glove. Comes with button badges and bandanas as accessories.
• Worn by: Aoi Yusuke, Kimura Ryu, and Wakazato Haruna
• WORLD TRE@SURE in Spain - Matador costume.
• Worn by: Tachibana Shiro, Hazama Michio, and Kizaki Ren
• WORLD TRE@SURE in China - Chinese Clothes; nontraditional changpao with capri pants and a golden hair flower with a tassel.
• Worn by: Mitarai Shouta, Watanabe Minori, Taiga Takeru, and Kabuto Daigo
• WORLD TRE@SURE in Hawaii - Floral print tops with midriff, swimwear, visor cap, and sandals.
• Worn by: Mizushima Saki, Himeno Kanon, and Maita Rui
• WORLD TRE@SURE in Germany - German clothes; white ascot, hat, open red jacket.
• Worn by: Ijuuin Hokuto, Tsuzuki Kei, Fuyumi Jun, and Asselin BB II
• WORLD TRE@SURE in Finland - White coat, ushanka, black gloves, and black boots.
• Worn by: Pierre Bichelberger, Sakaki Natsuki, Aoi Kyosuke, and Kiyosumi Kuro
• WORLD TRE@SURE in Canada - Earmuffs, vest, detached sleeves with fur trim, red kneehighs, white pants/white shorts, and boots
• Worn by: Okamura Nao, Uzuki Makio, Kagura Rei, and Akiyama Hayato
• WORLD TRE@SURE in Russia - Ushanka, military uniform with epaulettes and aiguillettes, and white gloves.
• Worn by: Kamiya Yukihiro, Yamashita Jiro, and Koron Chris
• WORLD TRE@SURE in Thailand - Thai clothing.
• Worn by: Kashiwagi Tsubasa, Hanamura Shoma, Shinonome Soichiro, and Enjoji Michiru
• WORLD TRE@SURE in India - Indian clothes; turban, patterned clothing, earrings with other various jewelry (bangles, necklace, rings).
• Worn by: Akizuki Ryo, Amagase Touma, and Nekoyanagi Kirio
• WORLD TRE@SURE in United Kingdom - Blue jacket with capelet, double-breasted waistcoat, top hat, striped necktie or striped bowtie, and white gloves.
• Worn by: Kurono Genbu, Sakuraba Kaoru, and Tsukumo Kazuki
• WORLD TRE@SURE in Japan - Japanese clothes; Crop top under igote, headband, and baggy pants.
• Worn by: Takajo Kyoji, Kitamura Sora, Shingen Seiji, and Iseya Shiki

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