Lucie Joanne Silverman performing as Lucie Silvas, is a British singer-songwriter best known for her 2004 debut single "What You're Made Of", drawn from her first album Breathe In—itself a hit in the Netherlands, Spain and the United Kingdom.

"What You're Made Of" is the first single from British singer Lucie Silvas' debut album, Breathe In (2004). Released on 4 October 2004, the song debuted and peaked at number seven on the UK Singles Chart and reached the top 30 in Austria, Ireland, the Netherlands, and Sweden.