"Elvis's Twin Sister" appears in Carol Ann Duffy's The World's Wife (1999). This celebrated collection features dramaticfrom the perspectives of female relatives—real or invented—of famous men from literature, history, and myth. The speaker of this monologue is the imaginary twin sister of rock star Elvis Presley: a woman who resembles Elvis in looks, personality, talents, etc., but whose life has turned out very differently. Rather than becoming a global icon, she's become an anonymous nun in a convent—yet she still celebrates and even "pray[s] for" her brother's music. The poem draws parallels between rock and religion, art and spirituality, while contrasting the opportunities available to talented men and women of Elvis's era.