Pharrell is well known for his good sense of fashion, wearing the newest and most accepted fashion. Thats why I've decided to help you find the right clothes to best match his outfit.
How to copy the look:
Cashmere V-neck sweater off of J.Crew for $138
Secret Wash button-down shirt in white from J.Crew for $60
Sophmore Stripe Skinny Tie from Tommy Hilfiger for $48
WHAT TO WEAR ON THE BOTTOM:
Something to consider when pairing the outfit with the pants is the event you are attending. If you are going to a more laid back event, or just going out for the night then wear with jeans.
Vintage slim-fit selvedge jean in vintage medium worn wash from J.Crew for $118, a nice slim fit pair of jeans are good with this outfit for it helps the outfit look clean and fresh.
If you are going to a more formal event then wear dress pants.
Regular-fit wool Bowery pant from J.Crew for $98