First, find out if it’s a posh do and whether a morning suit is expected. If so, go to Favourbrook on Jermyn Street, or Hackett. Otherwise I’d suggest a single-breasted navy suit (Reiss Personal Tailoring, above), light blue shirt, perhaps with a tab collar (Smyth & Gibson), a medium-width silk or knitted burgundy polka dot tie (Richard James), and oxblood leather shoes (Oliver Sweeney). If the ushers have been trussed up in patterned silk waistcoats with coordinating ruffled cravats, be grateful you weren’t asked to be one of them — such a look is so sad as to be a mourning suit.
