We’ve assembled the handy guide below, ordered from the humblest options to the fanciest, to help you navigate this terrain.

For a red carpet look for Hollywood's biggest night, I turned to the venerable menswear store for a little style inspiration ...

But nowadays the most important event in Hollywood has ... wore tuxes on Sunday night and you’ll see a parade of formal cringe. Tuxedo trousers should have volume, somewhere in the vast gulf ...