Katy Perry is an undisputed queen of pop ... For their big night out, Katy donned a lace-fringed corset dress in baby blue, paired with over-the-knee black boots, while her two little nieces ...

Katy Perry is known for her playful ... The sheer garment was teamed with a pair of pointed-toe black heels with lace up detailing. The 40-year-old gazed down at the croissant as she cradled it ...