The origins of hip-hop fashion

"Fresh, Fly, and Fabulous: Fifty Years of Hip-Hop Style" is a new exhibit at New York's Fashion Institute of Technology. "Sunday Morning" contributor Kelefa Sanneh pays a visit, and talks with hip-hop legends Slick Rick and Dapper Dan about how New York street style mixed with European luxury brands may be in vogue, but its roots are in hip-hop.