Turns out the Bieber effect can be good sometimes...
Justin's first signing to his label Schoolboy Records, 26 year old fellow Canadian will release Call Me Baby, which is already climbing the charts steadily in America.
She previously released an unofficial video for the single, managing to rope in Justin, Selena and Ashley Tisdale to get their pose on and show us their faces. Clever stuff.
Carly's Twitter account was recently hacked, with the imposter tweeting inventive things like 'Beiber my balls', which Justin himself said was "a strange hack" and an "interesting obsession."
What do you think of Carly's single?