thebookmom nailed it - Sparkles and red, dahhhling! If you're aiming for diva-trashy, you MUST glitter and sparkle.
If you can find glittery/flashy fake eyelashes - get them! Use glitter eye-shadow and lipstick if you can find it. You will need ridiculously LONG nails with glitter polish or - little gems glued on (remember to do your toe nails, too). BIG hair with - of course - glitter (a wig will help if you need to) - OR if you still have the hair cut in your profile pic, you can go for the Liza Minnilli drag-queen look (Google it, my pet!)
Never leave home without your BLING! boa and crown. Big earrings, rings with BIG rocks (or passable fakes) and necklaces that draw attentions to your "girls".
The higher the heels you can navigate in, the better. Fishnet stockings or something with gaudy patterns and if possible, some bedazzled glitter going on.
High on the skirt, low on the bodice. Nothing says diva-trash like, "Look at my boobies!!!" (Remember to glitter the girls!)
Most importantly: Do be sure to match everything, dearest :-)
PS - For the love of all that is DIVA and unholy, come back and POST A PHOTO of yourself a-la Diva-Trash ... we want to snicker - er, support you, sister ;-D