Ostentation (noun)

1. The action or fact of showing off; display.
2. Excessive or conspicuous showiness; pretentiousness.

Origin:

Late 16th century (in the sense "display intended to impress others"): from latin ostentatio(n-), from ostentare "show off", from ostentus "evident", past participle of ostendere "show".

Examples:

1. He was accused of making his wealth through ostentation and fraud.
2. He was criticized for the ostentation of his lifestyle.
3. The wedding was an ostentation of wealth and status.
4. The new mansion was an ostentation of his success.
5. The ostentation of the event was overwhelming and distasteful.