Kristen Stewart and One Direction win big at the Nickelodeon Kids' Choice Awards

At the annual ceremony in Los Angeles, One Direction took home the prizes for Favourite Music Group and Favourite Song ('What Makes You Beautiful').

Kristen Stewart, 22, picked up two awards as she was named both Favourite Female Buttkicker for her title role in 'Snow White and the Huntsman', and Favourite Movie Actress (as Bella Swan in 'The Twilight Saga: Breaking Dawn - Part 2').

Before presenting Kristen with the latter, Sandra Bullock and Neil Patrick Harris kept up the tradition of celebrities getting slimed, while rapper Pitbull and basketball star Dwight Howard were also subject to the show's signature stunt.

The award's host Josh Duhamel joked after Dwight's sliming: "I guess that's what we call a slime dunk!"

Kids' Choice Awards Winners 2013
Favourite TV Show: 'Victorious'
Favourite Reality Show: 'Wipeout'
Favourite Cartoon: 'SpongeBob SquarePants'
Favourite TV Actor: Ross Lynch ('Austin & Ally')
Favourite TV Actress: Selena Gomez ('Wizards of Waverly Place')
Favourite Movie: 'The Hunger Games'
Favourite Movie Actor: Johnny Depp ('Dark Shadows')
Favourite Movie Actress: Kristen Stewart ('The Twilight Saga: Breaking Dawn - Part 2')
Favourite Animated Movie: 'Wreck-It Ralph'
Favourite Voice from an Animated Movie: Adam Sandler ('Hotel Transylvania')
Favourite Male Buttkicker: Dwayne Johnson ('Journey 2: The Mysterious Island')
Favourite Female Buttkicker: Kristen Stewart ('Snow White and the Huntsman'
Favourite Music Group: One Direction
Favourite Male Singer: Justin Bieber
Favourite Female Singer: Katy Perry
Favourite Song: 'What Makes You Beautiful' (One Direction)
Favourite Male Athlete: LeBron James
Favourite Female Athlete: Danica Patrick
Favourite Villain: Simon Cowell ('The X Factor')
Favourite Book: 'The Hunger Games' series
Favourite Videogame: 'Just Dance 4'
Favourite App: Temple Run