Jessie J has slammed the people behind the leaks of songs from her forthcoming sophomore album. 

The 'Nobody's Perfect' hitmaker took to Twitter today, July 19, to tell her followers that it's disrespectful to the musician or artist to release their material before it's fully ready to be unveiled. 

"Its a real shame when people feel they have the right to leak an artist songs. Its art and personal... #notcool"

When asked by a fan if she had any idea who might be behind the activity, she replied:

"I will never know. Could be anyone from a hacker to someone who has been sent the song once upon a time #Sad Fluff it!! Imma just keep writing!! Keep believing and keep working my ass off!! :) yeaaahh man!!"

Watch Jessie J perform what will be her debut album's fourth single, 'Who's Laughing Now', at Glastonbury here: