Los Angeles, Dec 23 (IANS) Singer Kelly Osbourne has rubbished reports that her mother Sharon doesn't approve her friendship with Miley Cyrus as she believes the "Hanna Montana" star is a bad influence.

According to tabloid reports, Sharon was keen to break them up after Cyrus got stuck in bong smoking controversy. However, Kelly said her mother actually approves of their blossoming friendship.

"Just read in the rags that apparently my mum thinks Miley is a bad influence on me it could not be father (sic) from the truth!" Kelly wrote on microblogging site Twitter.

"Actually it's the other way around. Miley has us all on a health kick. Gym/early nights There (sic) really scraping the barrel on that one!

"This really makes me mad. Miley is one of the most hard working respectful women I have ever worked with I am learning a lot from her! Miley and I have become really close. I'm sick of all the haters judging her she made one mistake and trust me she has learned her lesson!" she added.