From Knitting Lingerie Style:
Ribbed boning and lacing were two of the more memorable components of traditional corsetry. Just those two details alone add sexy simplicity to this pretty sweater. Ribbing mimics the look of boning in a close fitting but comfortable way, and lacing shapes the cardigan while leaving just enough to the imagination. Sparkly lame in the wool/silk blend yarn twinkles with glamour day or night. Layer this sleek sweater over a tank or wear it over bare skin.