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12 March 2013, 17:23
The 'Price Tag' singer's professional double shows the star what she may look like after this week's event.
A Jessie J lookalike has shaved off her hair for charity ahead of the signer's upcoming Red Nose Day event.
The 'Domino' singer is preparing to say goodbye to her locks on Friday night (15th March) and 24 year-old Melissa Frayne has offered her an insight into how she may look after the experience.
Melissa raised £1,050 for the Brompton Fountain charity and said it was a "nerve wracking" moment when the clippers first made their way towards her head.
"It was nerve racking but it felt amazing as it was coming off," she told SWNS.com. "I think I'm lucky because I have a good shaped head so it looks alright."
Funds raised will benefit the Royal Brompton hospital in London - where she was treated for a hole in her heart as a child.
"All my friends have been tweeting Jessie J because they are so proud of me," she added. "I would love it if she saw the photos – she's the one who inspired me to do it."
Watch the moment Melissa shaves off her hair in a salon in Milton Keynes below:
She added: "Everyone has been so supportive its fantastic and I wish Jessie J all the best of luck for Comic Relief."
Meanwhile, Jessie was seen this week sporting her signature bob as she arrived for the press launch event of the new series of The Voice.