海外の衣装屋サイトの製品とかを参考にしてスタイリッシュな衣装を目指せば、垢抜けると思うの。
上着無しのチュチュタイプ
https://www.ciccidance.com/costume-categories/tops-and-bottoms/tuxedos-and-tails/tuxedo-leotard
タキシード風の衣装いろいろ
https://www.weissmanscostumes.com/tap_and_jazz/9552.aspx?position=32
https://www.weissmanscostumes.com/tap_and_jazz/9910-clearance.aspx?position=89
https://www.weissmanscostumes.com/tap_and_jazz/6260-clearance.aspx?position=6
https://www.weissmanscostumes.com/tap_and_jazz/8493-clearance.aspx?position=50
https://www.weissmanscostumes.com/tap_and_jazz/9505-clearance.aspx?position=21
https://www.weissmanscostumes.com/tap_and_jazz/9867-clearance.aspx?position=44
https://www.weissmanscostumes.com/tap_and_jazz/7869-clearance.aspx?position=18