The pop star attended the event held at the Nokia Theatre L.A. Live in Los Angeles dressed in a ladylike floral printed Valentino dress.
The singer's demure dress was accessorised with chic black Jimmy Choo heels.
Katy styled her hair in an on trend plaited up do that included a matching black and gold headpiece by Jennifer Behr to finish the pulled together look off perfectly.
The 28-year-old also made a nod to the Far East by wearing gold Sylva & Cie earrings that provided the right amount of bling and classiness for her ensemble.
Katy was honoured with four major awards during the evening for Favourite Female Artist, Favourite Pop Artist, Favourite Music Video for Part of Me and for having the Favourite Fan Following for her Katycats.
Other best dressed stars on the red carpet included Taylor Swift, who looked impossibly elegant and angelic dressed in a plunging floor length white gown with turquoise oversized earrings added as embellishment.
While Katy and Taylor played it safe with their outfits for the occasion, other stars opted for more risky ensembles that they looked equally good in.
Amongst the stand out celebrities was Lea Michele who rocked a hot pink Elie Saab cocktail dress with embellished lace detailing. Lea also showed off an on trend plaited up do, made up of numerous intricate braids combined into one.
Chloe Moretz was also dazzling in her cute outfit. The 15-year-old Carrie actress looked gorgeous in her age appropriate yellow neon coloured Simone Rochas dress, Casadei shoes, and a Smythson bag.
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