You know a television character is indelible when her name can be used as a verb. “Taraji owns the character,” says Rita McGhee, Empire’s costume designer. And together, she and McGhee “Cookie-fy everything she wears.” That takes sequins—lots of sequins. It’s a look inspired by crime bosses, female bosses, and occasionally Diana Ross, and some of the clothes are on loan from hip-hop moguls, including Monique Mosley (the business partner and wife of Timbaland, Empire’s executive music producer). “She lent us one of my favorite dresses, a one-of-a-kind zebra-print dress by Balmain,” says McGhee. Henson’s nails get Cookie-fied, too. “They’re long and stiletto-shaped, and they’re her own natural nails,” says Calandra Lamb Rhodes, the manicurist behind the looks. “Taraji likes dark colors, like plums and blacks. I usually use OPI…