The “Who Says” singer happily smiled for the cameras as she made her way through the press area at Belfast's Odyssey Arena before heading inside to ready for the big night.
Selena’s man, Justin Bieber, is also in the house as he is not only up for three awards, but is set to take the stage for a performance.
Other performers of the night include Lady Gaga, Bruno Mars, Coldplay, LMFAO and the Red Hot Chili Peppers.
