First off are Lindsay Lohan's outfits for Halloween 2006. Her aerobics outfit is not bad. And as for the other one...well I guess it IS Halloween and looking slutty is a prerogative. After all, didn't they say in Mean Girls that Halloween was an excuse for girls to look let their slutty side out? 
More inspiring and less slutty, I love Hilary Duff's gypsy idea. And I think if one is to go for the aerobics look, Haylie Duff knows how to do it. The colors and accessories match perfectly, everything just looks so cute! Also, she doesn't look like she forgot to put pants on i.e. Lohan above. 
One of the sources of inspiration for Halloween I believe are movies. Last year it was probably Marie Antoinette and Memoirs of a Geisha. So I tried to think of all the thematic movies out this year.... there weren't that many:Harry Potter, Spider Man- too cliche. Finally, I settled on the Pirates of the Caribbean and Hairspray. For Pirates, you can either go for Kiera's whole Chinese pirate look (not that I think Chinese pirates dress that way) or go for a more simple Pirate look i.e. loose white short, black skinny pants, captain hat, compass and sword. And for Hairspray- 60's fashion and BIG HAIR. 
And last but not least, we can all take inspiration from Marc last year and try the Ugly Betty look. I bet you they probably sell that poncho somewhere by now. And for something highly imitable with a trip to Walgreens, there is Betty's Halloween costume last year.And these are all my more "creative" ideas so far. Betty Boop, cowgirl, Greek Goddess (actually not bad), playboy bunny, Barbie, Elle Woods, goth, Edie Segwick, pinup girl, Dita von Teese, cheerleader, preppy, American flag, zombie, hobo also comes to mind. But they didn't strike me as very easily achievable or creative. Any more smart and creative ideas to share?
