The holidays are one of the busiest times of the year, what with the constant crush of Christmas parties and merrymaking. The semi-regular All in One series returns to help you hit a single store for assembling the perfect survival suit to make it through to the New Year in style. Today’s shop: venerable men’s department behemoth Harry Rosen. The gold standard for dude duds, the five-floor store carries most major man lines, from Tom Ford and Giorgio Armani to Dolce and Gabbana and other fancy-sounding Italian suit makers. Pick up this ensemble (including the most beautiful blazer we’ve ever fondled longingly) for $6,000 or so (or around $1,500 without the blazer—but believe us, once you stroke this cashmere-wool blend, you may be unable to resist adding it to your bill) and feel secure knowing you’re the most sharply dressed gentleman in the congregation around the eggnog this year. Check out all eight pieces and a price breakdown in a gallery after the jump.