From Holiday Knits:

Stripes are often considered to be a casual look, but who says they have to be? By striping with texture instead of with color you get great visual interest with an equal measure of elegance. The fuzzy yarn gives this hat-and-scarf set a plush look and feel without being too over-the-top. And because of the silk ribbon, it delivers a rich, sophisticated effect with a little kick--the best of both worlds. If you make both the hat and scarf, it may take you more than just the weekend.

Gauge:
3.5 sts and 6 rounds per inch over St st on circular needle in size for hat with Celia triple or Louinie doubled.

6.25 sts and 5 rows per inch over K1, P1 rib stitch on scarf needles with Celia tripled or Louinie doubled.