I think Hikari would have to dress Ichigo up as...  Ichigo!  The one from<em>Tokyo Mew Mew</em>, that is, not the one from<em>Bleach</em>.  A pink-haired magical (cat)girl with a frilly pink dress with bells and such!  Very berry.  Though, it might also be fun to make her cross-dress as male Ichigo so Masato could go as Sado from<em>Bleach</em>; you always want to try and pair people off, when possible.  Plus, she could dress Sanro up as Renji for some awkward male/male/incest/cross-dressing/god-only-knows-what fun!