The best replacement for black tie is white tie.

The best alternatives to black tie are rated as following:
★★★★★  white tie
★★★★  formal
★  tuxedo
★  formal attire
★  lounge suit
★  bow tie
★  white tie affair
★  red tie
★  applecare
★  white tie attire
★  white tie event
  cocktail
  cocktail attire
  dinner jacket
  formal dress code
  applecare iphone
  whiteboard
  dickie bow
  festive attire
  cocktail dress
  dinner suit
  semi formal
  asurion
  kiyoshi-black
  no tie

Your alternative for black tie is not listed? Suggest!
Speaking about black tie, one probably shouldn't forget about navy suit.

Other search terms related to black tie and their ratings are:
★★★★★ navy suit
★★★★★ black shirt
★★★ black suit
★★★ blue shirt
★★★ charcoal suit
★★ light blue shirt
★★ pink shirt
★ red shirt
★ tails
★ blue suit
★ gray suit
cummerbund
You have in mind a companion for black tie and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of black tie in all years. Click on graph for more.
black tie
white tie
formal