Pixie Lott broke down infront of Mariah Carey

Pixie Lott broke down when she met her idol Mariah Carey.

The 'Boys and Girls' hitmaker surprised herself with her tearful response when she encountered the singer because she is usually so calm around other celebrities.

She said: "When I was little I listened to my mum's music. I sang all the big ballads by Mariah Carey. I met Mariah - she had a party in London and I got to meet her. I thought I'd be fine as I've met so many people but I shook her hand and started welling up. "

The 19-year-old British star is still embarrassed about the incident and wishes they had had a more notable encounter.

She told the Metro newspaper: "It was so embarrassing but I was overwhelmed, she'd been my idol since I was so young. Then she went to the toilet. She didn't give me any advice on how to be a popstar."

Pixie also admitted to having celebrities on the brain, as she recently had a nightmare about 'Bad Boys' singer Alexandra Burke.

She said: "I had a weird dream last night. I was robbed at gunpoint. They ran off with my bag, which had all my stuff in it, and I was thinking, 'Oh no, my mum's going to kill me.' Then we got in the car and Alexandra Burke was in there. I was quite disturbed I dreamt about Alexandra Burke, I don't know where that came from."