15/02/2012 08:45 GMT

Cheryl Cole Hits Back At Cher Lloyd Criticism On Twitter

We've come a long way since Cher Lloyd was touted as Cheryl Cole's mini-me.

Despite the pair being inseparable on The X Factor in 2010, they are now officially at war after Cheryl used Twitter to publicly hit back at Cher's criticism of her singing.

Yesterday Cher lashed out at her former mentor for her apparent reliance on autotune, stating she would only duet with her "if she sings live".

But Cheryl looks to have issued a warning to the rising star via the social networking site telling her "unappreciation is ugly".

Cheryl tweeted to her 1.6m followers: "Be Careful who you kick on your way up .. They kick you twice as hard on your way back down.. #unappreciationisugly"

The spat was kick started when Cher was asked during an interview with Real Radio North West, if she would like to perform with Cheryl, when she said: "Maybe if she sings live with me!"

When asked if she thought it would be a challenge for Cheryl to perform live, Cher replied: "Well it is nowadays, when you haven't got the nifty little button to press."

Cheryl came in for criticism when she performed her single Fight For This Love on The X Factor in 2009 when she was accused of using a pre-recorded backing track.

We can't wait to see what Cher's next move is.