Lady GaGa is terrified of girls she went to school with.

The 26-year-old singer is still in touch with some people from her formative years, and still gets nervous when she has to hang out with the popular crew.

She said: ''I am throwing my best friend an engagement party this weekend, and I'm going to be seeing all these girls from school, and I would be totally lying to you if didn't say I was worried about how I'm going to look.

''I was saying earlier, 'I have to look fabulous, I have to look absolutely amazing, some of them were horrible to me!' ''

However she is unsure why women are often nasty to each other, and thinks more effort should be made to be nice.

She added to Stylist magazine: ''I think people are just, for no reason, wretched to each other all the time, and I don't think they use clothes or men or perfume or make-up or anything more than they use anything else.

''We should all make an effort to be nice to one another all the time.''