Every week, we bring you the best shoppable fashion and lifestyle stories from the editors at InStyle.com, including this interview with Pharrell Williams  about how he makes his fashion choices.
Pharrell Williams  has power dressing down to an art form. Just look at his towering Vivienne Westwood  hats, which are quickly climbing to iconic status, and his ever-changing red carpet getups (see his shorts from this year's Oscars ).
But it turns out that these fashion stunts might not be as calculated as you think. "I'm not wearing these things because I'm looking for attention," he told InStyle.com at the launch event for his I Am Other collection at Uniqlo 's flagship store in New York. "I'm doing it because there's something on the inside that said to me (a) How do I feel this morning? (b) Where the hell am I headed? and (c) What's the climate going to be like?"
Surprisingly, the buzz around his most-talked-about look — that Vivienne Westwood  Mountain chapeau — wasn't previously planned, he said. "I just thought, 'I want to wear this hat.'"
The "Marilyn Monroe" singer also explained that the Grammys was not the first time he donned the statement-making headpiece. He purchased two styles — a brown suede one and a straw one — six years ago per Ronnie Newhouse's recommendation, he said. And he even wore one for past appearances on MTV and on ABC's New Year's Rockin' Eve.
Willliams explained that his beloved Mountain hat was "on vacation" at Monday's Uniqlo  event, but he did substitute it with a Selentino design (above).
When asked about his next big red carpet reveal, Williams said, "I'll probably know that morning — whatever it is." We're waiting with bated breath.
Check out more great stories from InStyle:
- Found It! Taylor Swift's Perfectly Polished Shirtdress 
- How Do Supermodels Work a New Pair of Heels? Heidi Klum Shares Her Secret! 
- Shop Her Look: Miley Cyrus's Boat Style (Love Those Chunky Cat-Eye Shades)