Gaga, Bieber & Cruz Double Up at Muchmusic Video Awards
Gaga kicked off the prizegiving in Toronto with a performance of her new track The Edge Of Glory, before singer/actress Selena Gomez took to the stage as co-host of the event.
She whipped the crowd into a frenzy by declaring, "You guys may not know this, but I love everything about Canada."
Bieber, Gomez's boyfriend, landed the first prize of the night for his track Somebody to Love - he tied for Best International Video of the Year by a Canadian with Drake's Find Your Love.
Taking to the stage to accept his trophy, Bieber quipped to Gomez, "You're very beautiful. Maybe we could go out sometime?"
Bieber continued his winning streak by claiming the fan-voted Ur Fave New Artist prize for Somebody to Love.
Gaga also claimed two prizes - International Video of the Year Artist for Judas and Ur Fave International Video for Born This Way - as did Cruz. The British R&B star won the MuchMusic.Com Most Streamed Video trophy and the Most Watched Video award for Dynamite.
Canadian rock chick Avril Lavigne caused controversy during the ceremony by accidentally saying the 'F' word during a performance of her track What the Hell.
Other winners at the ceremony included Far East Movement, who scooped International Video of the Year for Like a G6, and singer Shawn Desman, who was honoured with the Video of the Year for Electric/Night Like This.
Gaga closed the show with a performance of Born This Way.