Historical clue formulations

• Like black-tie affairs — 2024-09-08
• Formal — 2023-03-19
• Not casual — 2021-06-11
• Formal — 2020-11-14
• Like the Met Gala — 2020-08-02
• Formal — 2020-03-14
• Black-tie — 2019-01-11
• Not casual — 2018-10-18
• Like formal clothing — 2018-04-30
• Formal — 2016-02-21
• Like clothes at formal occasions — 2015-10-06
• Like gala attire — 2015-08-10
• Fancy — 2012-09-22
• Not casual — 2010-03-14
• Formal — 2008-12-07
• Smart — 2008-02-01
• Stylish — 2007-09-18
• Smart — 2007-08-11
• Sharp — 2007-02-16
• Fancy — 2005-10-28
• Fancy, as clothes — 2005-04-18
• Nice, as clothes — 2004-06-16
• Fancy — 2000-02-17
• Requiring a tie — 1997-05-11
• Ornate — 1997-04-24
• Smart — 1994-03-28