This Couples from Harry Potter photo contains
business suit, suit, and suit of clothes.
There might also be
dress suit, full dress, tailcoat, tail coat, tails, white tie, white tie and tails, judge advocate, and three piece suit.
Harry Potter's canon, movie-canon and non-Canon couples. Couples in this video are Neville and Luna, Remus and Tonks, Bill and Fleur, Severus and Lily, Harry and Ginny, Ron and Hermione,