Lady GaGa used to be "smart and studious".

The 'Alejandro' hitmaker - who attended New York's Convent Of The Sacred Heart high school along with heiresses Paris and Nicky Hilton - rarely saw the two socialites during their time at the educational Institute because they mixed in such different social circles.

She told Q magazine: "I don't see Paris as an artist. People assume that all the girls who went to my school were like Paris and Nicky and the truth is that I went to a very, very religious school. Some girls were very artistic, some did drugs and didn't give a f**k. It was like any other high school. Except we had nuns.

"I was the smart, studious theatre and music student. I didn't hang out with all the popular blonde girls. I wasn't blonde really until I was 20 years old."

The eccentric singer's comments must come as a blow to Paris, who recently revealed she is in awe of the outrageous stage outfits Lady Gaga manages to pull off.

She tweeted: "Dancing to Lady Gaga. Her outfits are so amazing! She is such a style icon! No one can pull it off like she can!(sic)"