Carly (Miranda Cosgrove) and Shelby Marx (Victoria Justice, Spectacular!/Zoey 101) are getting ready to rumble - and it's going to be a girl fight like no other!

On Saturday October 17 from 10.00am, Nickelodeon presents a special all-day iCarly marathon featuring competition‐themed episodes, culminating with the action-packed main event: the highly anticipated one-hour TV Event, 'iFight Shelby Marx'!

The mixed-martial arts match of the year all begins when Carly jokes on her iCarly web show that she could beat Shelby Marx, the best female fighter in the world. Shelby then challenges Carly to an exhibition match as a promotional win-win for both girls, but when Carly accidentally pushes Shelby's grandmother at a press conference, Shelby considers it 'game on' and Carly finds herself up for a real fight! What will happen when Carly and Shelby get their gloves on and step into the ring? Whatever happens - it will make for a great show!