This style is equally suitable for both casual and professional occasions.
Begin with a bias band folded square scarf, or a narrowly folded oblong scarf.
Grasp the two ends and drape behind around neck so that one end hangs lower than the other.
Cross long end over the short end. Bring it up through the loop created.
Take the same end and wrap around behind short end. Pull long end across and insert horizontally through the knot created, forming a square.
Grasp both ends and pull back behind neck. Tie a double knot.
Adjust so that the square knot is centered directly underneath chin.