Bows wowed at Marc by Marc Jacobs Spring 2010. Photo: Scott Wintrow, Getty Images

New York Fashion Week had a Material Girl moment.

As in lots of material, on the head.

At Marc by Marc Jacobs, models wore big, bright, satiny bows in their mussed up hair.

Milly showed off even bigger bows, in black silk and tied around side ponytails. Peter Som featured puffy chefs hats in pop colors and wild patterns.

And, in our favorite head game of the week, Rebecca Taylor sent her girls down the runway with their hair twisted into bow-shaped chignons.

So channel "Desperately Seeking Susan," and take a bow to the bow.

Head gear ruled at Milly (left) and Peter Som's (right) Spring 2010 runway shows. Photo: Frazer Harrison, Getty Images/Jason Kempin, Getty Images