The pair allegedly wanted to make Julia Alvarez, 15, 'look like Chucky', a reference to the heavily scarred horror movie character.Julia had been to visit friends and was walking home when she says she was approached by the two sisters who started hitting her and punched her to the ground.According to her statement two girls aged 18 and 16 pulled out knives and said: "Everyone says you are pretty. You won't look pretty when we have finished with you. People will call you Chucky."They repeatedly slashed her on her face and body, leaving her covered in blood and on the ground where she was found by passers-by who called an ambulance.One cut on the young girl's back alone required 20 stitches and she had needed dozens more on her face to put the flaps of skin back together.Incredibly police in the town of Juan Domingo Peron, in the northern Argentinian province of Formosa, initially refused to get involved.That was until the teenage girl's sister Yeni posted the images on Facebook, which quickly went viral and caused a mass protest at the failure to act against the pair.Police confirmed that they have interviewed two girls over the attack and released the 16-year-old because she was too young. The 18-year-old is still in custody.The older of the two claimed that they had been insulted by the 15-year-old and had decided to get revenge.Yeni said: "They were jealous of my sister for a long time and always abusing her and insulting her, but we never expected them to go this far."I have tried to stay strong for my beautiful sister but every time I see her I want to burst into tears. They have ruined her life.(mirror.co.uk)Bakudaily.Az