Katie, 30, opted to wear a pretty white dress with sheer sleeves to the star-studded event and she teamed it with a pair of chunky white heels and a white mani and pedi.
The mum-of-one accessorised with a funky mirrored clutch bag and added a pop of colour to her outfit with a slick of bright red lipstick.
Katie had her hair done especially for the glitzy ceremony, which was held at London's Park Lane Hilton, and she showed off her new look in a selfie beforehand.
Posing for a picture at home, the inspirational star revealed she'd had extensions added to her natural tresses to boost the overall length.
Commenting on the photograph, which Katie shared with fans on Twitter, she said: "Had a makeover with @TobySalvietto @MKardashian, a new look for me with @Easilocks hair, ready for @TVChoice Awards!"
We love Katie's new hair - and we bet daughter Belle Elizabeth is going to love giving her 'do a tug too!
TV star Katie, who has fought tirelessly to improve the lives of burns victims since she was attacked with acid in 2008, became a mum to Belle in March.
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