Fresh from her breakup with Russell Brand, Katy Perry never ceases to amaze her fans with her funky fashion sense and fabulous outfits. The talented singer looked stunning in a black dress paired with knee-high boots as she made an appearance in London after her show. Perry’s outfit accentuated her curves, while the laces of her boots perfectly matched her electric blue hair. The 27-year-old superstar even took the time to take pictures with her fans. Later on, she added some sparkle and dazzle to her look by layering a sparkly grey sweater over her ensemble.