Camila Cabello has revealed using her middle name has given her more ''confidence'' as a performer.

The 20-yea-old singer has released 'Havana' - a mini-film about her own life - in which she plays the parts of shy and reserved Karla, her actual first name, and ''video vixen'' Camila, with both of them coming from very real parts of her personality.

In a behind-the-scenes clip for the film, the former Fifth Harmony star explained: ''My family always called me Camila. When I came to school in the Untied States, I was really, really shy and the teachers started calling me Karla.

''In my life, I push myself to do a lot of things that make me uncomfortable, and that's how I started dancing.

''That's how I feel like I found myself - through Camila and performance and music, as that confident video vixen. They're both over-exaggerated personas of me.''

The 'Bad Things' hitmaker gave her social media followers a similar explanation when she was asked on Twitter about the different roles.

She wrote: ''Karla and Camila represent two parts of my personality, but Karla in the movie is who I really am and always have been.''

Despite her confident stage persona, Camila recently opened up about her fears - deep waters and the sharks that swim in them - and revealed she once had an ''anxiety attack'' whilst scuba diving because she thought that the dangerous fish could ''trace her pee''.

She previously told Buzzfeed: ''I really have to get over my fear of sharks and the ocean. If I'm in the ocean and my feet can't touch the sand I won't do it, I freak out. I went to Cancún this year with my family, and we went scuba diving, and I literally was having an anxiety attack while scuba diving.

''I was like, 'It's right behind me! I know it, it's right behind me!' It was not, I'm still here, but it was horrible. I peed a little bit in the ocean, and I was like, 'The shark can trace my pee, I know he's coming!' ''