Green’s Dictionary of Slang

(orig. US black) showy, indicative of conspicuous consumption.

2002		Teen Lingo: The Source for Youth Ministry 🌐 bling-bling jewelry – especially someone wearing a lot of gold jewelry. ‘Check out Jose’s bling-bling!’ or ‘Jose’s blinging it!’.
2002		‘Touré’ Portable Promised Land (ms.) 58: Bling-bling. [Adjective, ‘Yo, that Jesus piece is bling-bling!’].
2005		Guardian G2 28 Apr. 16: Dirtee Stank is American slang for smelly and horrible. ‘When Dizzee named the label everything was bling and shiny.’.
2006		G. Malkani Londonstani (2007) 22: We’s be havin a nice car, nice tunes, nuff nice designer gear, nuff bling mobile.