Busy promoting her new music Across the Pond, Katy Perry left the iTunes festival in London on Monday (September 30).

The "Roar" singer sported a knee-length furry white coat, black nylons, and black ankleboots as she smiled for cameras outside.

With a gold-colored semi-truck making its way around the United States to promote her new album, Prism, it was only fitting that she have an English counterpart.

In London, three limited-edition gold taxis are making their way around the city, showing exclusive content inside the cab.