The 26-year-old Fireworks singer performed hits Californian Gurls, Teenage Dream and Hot 'n' Cold, on the gold catwalk wearing a series of sexy outfits made by designer Todd Thomas.
Katy, who married comedian-turned-Hollywood-actor Russell Brand in India last month, opened the show in a purple bustier complete with a big purple bustle before slipping into a yellow PVC dress covered in pink hearts with a pair of thigh-high black boots [pictured].
The Victoria's Secret models who took to the catwalk to model the famous lingerie, included 29-year-old Adriana Lima, who was returning to modelling for the first time since giving birth to her daughter Valentina a year ago.
Speaking about getting back into to shape, she told USA today backstage: "To be back in shape for the fashion show, it wasn't easy for me. I really worked very hard." She was joined by other 'angels' Alessandra Ambrosio, Karolina, Chanel Iman, Candice Swanepoel, Isabel Goulart and Selita Ebank.
Even Rosie Huntington-Whiteley took time out from filming Transformers 3 alongside Shia Labeouf to return to her modelling roots and strut her stuff in a sheer corset and matching knickers.
Model and mother-of-four Heidi Klum was noticeably absent after recently announcing she was leaving the lingerie label after 13 years, as was Miranda Kerr, who is currently expecting her first child with actor Orlando Bloom.



































