Somewhat, perhaps, more cumbersome, but very workable, is to hire yourself a personal shopper for a day. Those are available at all major cities.
That person will guide you throughout the day while you go out and buy the stuff society at large would like to see you wear. End the day with a visit to a, from them, suggested barber and you're set.
This is probably closer to what I'm looking for, though ideally I'd be able to avoid the actual "going shopping with them" part. However, until my ideal service exists, I'll probably hire a personal shopper if I lack a girlfriend.
Also, there is sometimes a principal-agent problem; many personal shoppers work for the stores, and simply buy for you whatever the store is trying to get rid of.
I think this exists. I can't think of any names but I know I've heard of basically this concept.