He thinks she looks just fine the way she is. She's a ninja. They're supposed to be small and slender. If she looked like Tifa that would just be... disturbing. But, being Cloud, he'll always tease her about not eating enough anyway. It's a bad habit he picked up from his mother - worrying about someone else not eating enough - and it's because he thinks of her as his little sister so it's okay to tease without worrying about getting in trouble or her not understanding what he really means when he does it. Which is another reason he stays in front to take the brunt of any attack as they finally reach the upper floor as if access to it has been waiting for them this whole time. The room is dark and so empty the air hurts his ears as he steps in, sword at the ready. He's about to say something to her when something huge drops down from the ceiling, filling almost the entire room. Cloud has time for a lowly muttered:

"oh shi-"

Before Leviathan sends him into the nearest wall with a Tidal Wave like a giant sledge hammer.

((ooc. done. but it may not be kind to Yuffie))