There are probably a lot of French Maids in Comiket 2010. This is one of the many cute designs I've come across.
She somehow reminds me of 2k-tan, one of the personified Operating Systems aka OS-Tan. But I remember Windows ME to be the one who wears maid outfits, so I’m not certain. She could be a random otaku who likes wearing cute dresses, I suppose.
I really like her outfit though. And her shoes.
Thanks to Femi for sending this!