Katy Perry was spotted leaving the Piccadilly Theatre in London yesterday evening, where she saw ‘Ghost: The Musical’ with her mother-in-law Barbara Brand.

The singer appears to be currently inspired by American model Charlotte Free, as Katy matched her pink hair to her pink Giambattista Valli Fall 2011 dress.

Her tailored crepe cape dress is quite a minimalist look for the usually flamboyant singer, but the colour keeps this look characteristically Katy.

A chic updo, tights, black Christian Louboutin ‘Pigalle’ patent pumps and a punchy pink lip colour completed her look.

Katy’s cape dress is available to purchase from Net-A-Porter US and Net-A-Porter International in black and white, and in red from Luisa via Roma.

Credit: PacificCoastNews & Style.com