Lady Gaga sipped a cup of tea during her interview with Jay Leno and revealed she spent her school days upsetting nuns. The off-the-wall singer, who attended a Catholic school, said she had never liked having to conform.

"I was always very different and trying to not fit in too much. I just didn't want to be like anyone else and I was obsessed with Judy Garland and Led Zeppelin.

I got really good grades - I was like a straight A student - but I was really bad. I was very naughty, wore awful things to school. I used to roll my skirt up really high so the nuns didn't know what to do with me."