I did a Chell cosplay for AMA 2011.
I forced my sister to be my companion cube.
It was extremely fun xD We attracted a lot of attention (though she attracted a lot more than me by herself lol)
Pictures are on my profile. ^_^
Oboro - Fire Emblem Fates
Nozomi - SMT IV Final/Apocalypse
Gunner Yuna - Final Fantasy X-2