help me decide

Halloween is coming and I have no ideas about costumes.   Her first year she was a pumpkin, a cow, and a cowboy

 Last year she was a bee:

So what about this year?  Her current favorite characters are Dora and Abby Cadabby.  I find costumes for each,  but they have problems.   The Dora one - let's be honest it's a pink shirt and orange shorts,  with a wig.  But we live in New England and it tends to be freezing on Halloween,  and I really don't think she will wear the wig or the back pack.

 

And the Abby Caddabby one  - but again,  this is New England where it's cold on October 31st.   I guess I could get a size bigger than she needs and put a white long sleeved shirt and leggings underneath it... but that will just look stupid.

 

And I am back to square one with no ideas.    I like the ones at Old Navy because they seem to geared towards those of us that live north of the equator...  http://www4.assets-gap.com/Asset_Archive/ONWeb/Assets/Product/858/858497/quick/on858497-00qlv01.jpg  sorry,  Blogger won't let me upload the picture for some reason..  It's times like these that I wish I let her watch more TV to have more options for Halloween... she doesn't even know what a princess is- though I made her watch the royal wedding, natch.   Not that Kate is technically a princess,  but insignificant details bore me

And then I need to find a costume for myself since we are going to a party this year.   I know that most women just use Halloween as an excuse to be supper slutty,  but that's not really how I roll (though I was Britney pre-K-fed my junior year in college complete with my sidekicks Xtina and Eminem - this is one of the rare times I wish digital cameras had been popular when I was in college!),  and no one really wants to see a slutty 30 year old suburban mom.  That's lame.   I need a non-lame, non-slutty,  easy to assemble costume.   A little help?