Costume Dilemma

So, I'm having a hard time coming up with a good costume idea for Halloween this year. Since 2002, I have used decades as themes for my costume (mostly).

• 2002 - 50's housewife (vintage sweater, pearls, skirt, hair flip bob thing)
• 2003 - 80's prom date (that shouldn't need describing ha)
• 2004 - 60's movie star incognito (fancy dress, "diamonds", trench coat, Audrey Hepburn scarf, giant sunglasses)
• 2005 - Geisha (Not part of the theme. An anomaly that got me a date with a hot chick.)
• 2006 - Slutty Dorothy (Also not part of the theme but I did it for G, who had to be the Tin Man at work)
• 2007 - Drapes (hahaha. I was broke so I wore a dress I already owned that was made out of material that resembled drapery and bought a $7 dollar curtain rod. Talk about creative. hahaha)
• 2008 - 70's porn star playing a tennis player (bad ass slutty 70's tennis dress - the inspiration for this costume, tennis racket, matching knee highs and "boyshorts", white platform sneakers, wrist bands, rainbow addidas tennis headband)

Anyway, I'm having a hard time coming up with some other decade-themed costume. It's gotta be gayborhood block party friendly. Maybe I should just hit some thrift stores until I find some inspiration. I was thinking 40's pin up girl but it's so cliche. Maybe 90's rock star's crackwhore wife (inspired by Courtney, of course) or 80's high school bad girl (complete with Whitesnake acid wash denim jacket). Any ideas? I'm almost ready to throw in the towel on the decade theme and just go with Princess Leia like the total nerd that I am.