Meant in a similar vein to PWNED, but the D stands for Don. To Don something, and to wear with confidence and a little sass...
1 : to put on (an article of clothing)
2 : to wrap oneself in : take on
3: to blow everyone else out of the water.
"shit gurrrrl you really DWNED those ten inch heels last night, yer see all those bitches giving you evils????!!!"