is fair isle a new teen trend?

I took MyFavoriteKid to the mall today so he could pick up a couple pairs of jeans (have I told you that since his last growth spurt he is now taller than me??!). He's outgrown everything lately.

While he was trying stuff on in PacSun, I spotted these little shoes for sale on the girly side of the store:


Knitted fair-isle fabric stretched over fuzzy-line ballet flats.
Heh.