Ke$ha apologises to Justin Bieber

Ke$ha has reportedly apologised to Justin Bieber after she was quoted as calling the teenage star a "tiny baby".

The 'Blah Blah Blah' star was reported to have compared Bieber, 16, to a child and suggested that she wanted to "push him around on stage in a carriage".

Writing on her Twitter account, she said: "Dear Justin B, I am so sorry if my bad joke has hurt your feelings.

"You are obviously so talented and I would never mean to offend you. I think you are rad."

A representative for Ke$ha recently denied rumours that the singer is featured in a sex tape currently available on the internet.