I'm just about to start work on an Effie costume for Dragon*Con. It'll be a variation on her style though, rather than a specific movie-based outfit. I was trying to cheat and find someplace where I could buy a "Capitol-esque" pink jacket, but no such luck yet.
My Cosplay Adventures on Tumblr
Joyleaf - Elfquest || Belial/Mad Hatter - Angel Sanctuary
Surprise Hulk Variant - Marvel Comics || Black Widow - Hawkeye #9 || Mary Jane Watson - J. Scott Campbell version
Maevaris Tilani - Dragon Age Comics || Sugar Rush Racer Sticky Wipplesnit - Wreck-It Ralph