At least there's a chance that a garment might be cut in way that distinguishes it from its ancestors, even if the current "modern cut" is straight out of the early '60s.

I suppose a cologne with strong notes of baby powder and strained peas—or perhaps Clearasil and bubble gum—might be youthful. As for "sport" scents, what's sporty about them apart from the marketing? Do they smell like sweat? Or do they somehow mask the smell of sweat more effectively than do non-sport colognes?

Thank you, sir.

Obviously, the entire fashion industry revolves around buying into hype. Style involves filtering the hype to get to your personal "truth." That may still mean buying into some hype, but at least you're a step ahead of the game if you do so with generous measures of knowledge and discrimination. (Or so I like to tell myself as I pay off my Barney's balance.)

As for allegedly youthful scents, for once I'm perfectly happy to see youth wasted on the young.

I don't mean to "put [you] into place"; you're probably right about how marketers break down age categories for scents. But, all that really matters with a scent is 1) how does it smell on you (as opposed to in the bottle, on a test strip, or on the model who probably isn't even wearing it for the photo shoot); and 2) how does it fit within your budget. The rest—age, lifestyle, activity, season, time of day, even gender—is arbitrary. A 50+ y/o man might smell great in Jessica Simpson "Fancy," but, thanks to the way it's packaged and sold, we'll probably never know.

If the marketing categories serve a purpose for the consumer, it's simply to break down the overwhelming number of choices into relatively manageable chunks. I don't think it matters which scents are in which group, so long as the groups aren't so broad as to intimidate people out of shopping. 

I would debate all your opening premises—that most women's perfumes are floral, that florals are definitively romantic, and that most women are romantic (that is, more so than men, or more so than other things that most women also are). Besides, isn't smelling like most women the last thing that most women want?

Yes, scents do evoke certain impulses, memories, and moods, but the link between food scents and hunger is fairly concrete compared to the link between, say, roses and romance, let alone any scent and youth.

That's not to say there's no relationship between scent and age at all. Here's some interesting reading:

http://reddressdiary.blogspot.com/2008/09/tracking-down-scent-of-youth.html [reddressdiary.blogspot.com]

But, this says that there is a scent associated with age, rather than youth. It gets you nowhere in looking for a scent that's uniquely appropriate for young people. Besides, most of what's marketed to youth is brash and unsophisticated; would you really recommend a scent with those characteristics to anyone, of any age?

As for "young fashion," yes, there are certain styles that tend to work better on younger people, particularly when it comes to how revealing clothing is of the physical form—whether by adhering to the body or exposing it. Those of us above a certain age have to work harder to look good in those styles, and even then we might be better off not attempting it. There's also a difference in the level of frivolity in the daily lives of the average student vs. the average working adult, and fashion can reflect this.

In the video clip, Amanda Brooks defined "young fashion" as everyday, easy-to-wear clothing. I can certainly see how that would seem youthful compared to fussy, high-concept extravaganzas and/or evening wear—things for which Posen has been known. I would also expect young fashion to be priced for the budgets of young consumers, but not all fashion houses think that way.