My first post - so please be gentle with me [img]i/expressions/face-icon-small-smile.gif[/img]

In japanese mythology the nine-tailed fox also has the ability to appear as a beautiful woman - which could be the reason for sexy no jutsu to be the first transformation technique that Naruto is able to master, and indeed for it's presence in the series.

Just a thought, and apologies if it's been mentioned here before