I throughly wanted to do this costume for who knows how long.
Basically, the entire costume is made of swimsuit fabric stuffed with fiberfill and quilter's batting. To make the tentacles, I took some PEX pipe (thinner version of PVC) and some joints and literally drilled and screwed them into shape. Then I took sixty (60) resin jewels and glued them into shape for the suckers. Taking some fishing line, the tips are sewn to the dress to give it a curve.
The plushies are also a project in itself. Taking some leftover fabric, I made wonderflex heads and put electroluminescent panels in the inner eye to make it glow. The neck is velcro which allows me to get the 9 volt battery to turn it off. These things will last all day. They're attached with fishing line; I think they swim in the air nicely.
Staff Vote: Anime Boston 2008
Third Place: New England Comics Anime Boston Costume Contest 2008
Best in Show: PortCon Maine 2008
OMGWTFBBQ award: PortCon Maine 2008