A sculpture inspired by a desire to bring a contemporary "everywoman" to Trafalgar Square has been unveiled on London's Fourth Plinth. Lady In Blue by New York artist Tschabalala Self, which pays homage to a young, metropolitan woman, is the 16th artwork to feature on the plinth since 1998. The bronze and blue figure replaces Mil Veces un Instante (A Thousand Times in an Instant) by Teresa Margolles. The statue has been patinated with a pigment refined from Lapis Lazuli, a semi-precious stone that has been used by artists for millennia. Self said she had set out to put an...