For men:

• black tux or suit
• bowtie, top hat, bowler hat
• cigar (not lit in the club, please!)
• monocle, white gloves, cane

Alternatives

• Yachting attire
• Polo or jockey outfit
• Music industry billionaire
  (music exec, hip-hop or rock star)
• Fox-hunting finery

For women:

• gown (prom? bridesmaid?)
• furs, diamonds, pearls
• fancy scarf, opera gloves
• heels, cigarette holder, tiara

Alternatives:

• Martha Stewart
• Deposed Eurasian Royalty
• International Velvet Equestrian
• Executive Power Suit