Historical clue formulations

• Ballet attire — 2020-09-06
• Ballerina's wear — 2018-02-07
• Trampolinist's wear — 2017-01-08
• Exercise piece? — 2015-12-02
• Ballerina's tight-fitting attire — 2009-11-09
• Trapeze artist's attire — 2009-09-08
• Dance class outfit — 2007-11-05
• It's a tight fit — 2003-08-23
• Dance class wear — 2003-02-17
• Dance piece — 2002-11-23
• Aerialist's get up — 1997-06-08
• Tights — 1996-07-21
• Skintight outfit — 1996-06-28