This deviation is probably somewhere near the top of my list of Reasons I Should Not Be Allowed Near A Pencil At 2 a.m. I found it waaayyy too amusing to draw - I was giggling like a lunatic all through the frenzied sketching. Then again, at 2 a.m. a lot of things seem funny.
The original idea for this came from watching Fruits Basket and thinking that Momiji's taste in clothes is a lot like Sakura's. Then I thought it would be randomly amusing to dress him up in Sakura's outfit, given he already seems to have a tendency that way. (Note: I haven't watched Cardcaptor Sakura, so please don't flame me saying Momiji is nothing like Sakura or something of the kind.)
At this point, my brain spoke up and questioned where Momiji would get such an outfit anyway. I reasoned that Ayame would probably be only too happy to make it for him - heck, he'd probably even wear it himself.
....At this point, the little devil horns clicked up above my head and I got to drawing the insanity.

I ended up using this pic to practice a couple of things I'm rather iffy with, including cel-shading, foreshortening, poses and floofy hair. Some of these worked better than others. I'm not too happy with Yuki, either, because I couldn't find any references for his rat form.
I tried to make Ayame as masculine as possible, but it's kinda hard considering even in his normal clothes he's practically got oestrogen leaking out his ears.
Props goes to ~KeReN-R for the shoujo-bubble and sparkle tutes. Thankyew very much.
...okay, I'm done ranting. Enjoy!

Done with pencil and paper, then scanned and coloured with Photoshop 6.0.