Olivia Rodrigo has fully embraced Gen Z's favorite dress trend — the babydoll —during her latest music era . For her appearance on Saturday Night Live on May 2, where she served as both host and musical guest, Rodrigo tapped vintage clothing and brands beloved by celebrities like Taylor Swift. To perform her new single, " Drop Dead ," Rodrigo wore an enviable vintage babydoll dress, identified by @styleforoliviar as a 1920s lace and chiffon teddy camiknicker romper in a turquoise shade. The superstar accessorized her vintage babydoll with a pair of Miu Miu 's Satin Ballerina Flats in Orchid Pink, which retail for $1,070. Rodrigo—who is styled by Chloe and Chenelle Delgadillo —completed her outfit with a pair of thick white leg warmers. Article continues below Olivia Rodrigo performing "Drop Dead" on SNL . (Image credit: Lloyd Bishop/NBC via Getty Images) For her performance of the brand new song " Begged ," Rodrigo wore a delicate light pink chiffon dress featuring ruffled sleeves and an open skirt.…