Lady GaGa is not a ''reductive Madonna copy''.

The 'Applause' singer doesn't care if people accusing her of imitating the elder star - sparked by her 2011 single 'Born This Way' bearing similarities to Madonna's 'Express Yourself' - because she feels her work stands apart.

She tweeted: ''LADY GAGA IS A REDUCTIVE MADONNA COPY! SHE'S OVER NOW! #WriteWhatUWant #SayWhatUWantBoutMe #ImNotSorry''.

She then added a link to a 2012 interview in which Madonna described her songs as ''reductive'', adding: ''MADONNA HATES GAGA SHE'S OVER. I don't need anybody's permission to be remembered. I will be. Whether they like it or not.''

Gaga, 27, also addressed her past issues with drugs and fluctuating weight in a similar manner.

She added: ''LADY GAGA IS ON DRUGS. HER CAREER IS OVER! (Been an addict for 10 years) #WriteWhatUWant. My recovery is a daily battle.''

She also tweeted a picture of her curvier figure accompanied by the ''#DoWhatUWantWithMyBody''.

Gaga also she didn't care the first single from her 'ARTPOP' album didn't reach Number One, adding: ''I write for the music, not the charts.''

Gaga's latest track, 'Do What U Want' featuring R. Kelly was released today (21.10.13).