Luxury by 
Luxury Brands in Emerging Markets by 
Global Fashion Brands by The most directly relevant subject headings [to search Stylecat, the FIT Library catalog] are
Luxury : about the theoretical concept
Luxuries : products and services
Luxury goods industry : business aspects
Any of these headings might be subdivided for a narrower focus. e.g.
Luxury -- Social aspects
Luxuries -- Marketing.
Luxury goods industry -- Management
The use of subject headings is part science, part art, so really any of them could reflect your topic.
Related terms (which may also have subdivisions) include:
Affluent consumers
Consumption (Economics)
Rich people
Most company & industry and market research databases will have coverage of luxury markets, but some have more extensive coverage and/or easier ways to pull it all together.
This link opens in a new window
From the home page , choose
Industries> Luxury Goods
OR
"Search statistics" or "Find analysis" > Choose Industry> Luxury Goods.
Additional detailed choices will then appear under "select category" pull down menu, including "Super Premium Beauty and Personal Care"
This link opens in a new windowMENU > Product categories> Beauty
LUXURY Is a separate category:
MENU > Market Intelligence> Business & Strategy > Market Segments> Luxury
Luxury segment dashboard can be found at
Category Overview > Theme > Premium & Luxury
See also
Category Overview < Demographic > Affluent Consumers
E-mail alerts can be set up for newly-added content in each desired area.
There are market research firms (and divisions of larger insights firms) that specialize in categories including luxury and affluent consumers.
Though most content is high-priced reports not widely available at libraries (including FIT), many companies offer free access (often with required registration) to white papers, articles, blog posts etc that give some insights into their original and compiled research.
