The Fool (spoilers for all RotE books, including LST)

[redchild]

Interesting how the same behaviour can imply different things to different people. To me, the Fool dressing Fitz up seemed very childlike; like a little girl playing with a doll.

Or like a lover trying to spruce up the slovenly appearance of his significant other Fitz was never very interested in dressing up, although he does appreciate beauty very much. So I guess you could say Fitz was like his doll, but you could also see Fitz like a rough gem or precious stone that the Fool wanted to polish up and reveal its beauty. And since Fitz isn't very comfortable with the idea of having an intimate relationship with the Fool, admiring Fitz from a distance is about the closest the Fool dares to be without toeing the line.

I think the Fool is seen as childlike probably because he left his stuffy childhood tutors who kept reminding him of his importance and finally had some room to breathe and grow on his own. He's not frivolous like a child, though. He's definitely very idealistic and very hypersensitive to everything and everyone around him.