Reality star Kelly Osbourne has spoken out against Miley Cyrus “haters”, saying that the teen popstar has “learned her lesson” after the latest bong controversy.

The two stars became friends recently after working together on the upcoming film ‘So Undercover’.

Rumours were swirling this week that Kelly’s mom Sharon Osbourne was worried about the influence Miley was having on her daughter after a video of the ‘Can’t Be Tamed’ singer smoking a bong was leaked online.  Kelly previously overcame a serious addiction to pain killers.

However, Kelly was quick to rubbish the claims, taking to her Twitter to say:: "Just read in the rags that apparently my mum thinks Miley is a bad influence on me it could not be father from the truth!"

She added: "Miley and I have become really close I'm sick of all the haters judging her she mad one mistake and trust me she has learned her lesson!"

Watch Miley's video for 'Who Owns My Heart' below: