Misa:
Hair
http://www.cosplaymagic.com/denoammiwig.html

Tianzi:
Contacts
http://www.youknowit.com/online-shop/citrus-crazy-contact-lenses-pair.cfm

Dress
http://www.cosplaymagic.com/cogetico.html

Wig
http://www.cosplaydreamland.com/code-geass-r2-tianzi-cosplay-long-wig-p-185.html