What is Conspicuous Consumption?

Legal Definition
Conspicuous consumption is the spending of money on and the acquiring of luxury goods and services to publicly display economic power—of the income or of the accumulated wealth of the buyer. To the conspicuous consumer, such a public display of discretionary economic power is a means of either attaining or maintaining a given social status.

The development of Thorstein Veblen's sociology of conspicuous consumption produced the term invidious consumption, the ostentatious consumption of goods that is meant to provoke the envy of other people; and the term conspicuous compassion, the deliberate use of charitable donations of money in order to enhance the social prestige of the donor, with a display of superior socio-economic status.
-- Wikipedia
Legal Definition
A luxury spending that is targeted for psychologial craving or status. Thorstein Bunde Veblen first used the term.