Hello Marge Simpson look-a-like...
As if we’d expect anything less from this blue-haired lady.
After that see-through dress, the singer was seen fully embracing her fave blue hue as she dressed head-to-toe in the bright shade.
Sculpting her hair into a retro beehive, she wore a metallic coat with sculptured collar and matching accessories. Katy’s black shift dress also had cut-out detail which revealed light blue lining.
The quirky singer finished her look with music note earrings, pink frost lippy and chunky black sunnies.
Katy's latest blue look follows her similar cartoon style at the launch of her Eylure lashes recently.
So what do you think of Katy’s all-blue look at PFW? Do you like her beehive?