Hip-hop artists are getting very mouthy about their bling

Before Nelly's "Grillz" (featuring Paul Wall, Ali & Gipp) became a radio hit this month, flashy dental jewelry was a phenomenon seen in hip-hop videos and magazine pages but seldom heard about in rap songs. Nelly's ode to the removable gold- and diamond-encrusted tooth ornamentation commonly known among rappers as grills has helped shift hip-hop's latest fashion trend into high gear