18-year-old Mansfield girl missing
She was reported missing at around 10pm on Wednesday, April 26.
A Nottinghamshire Police spokesman said: "Nikki is described as white, of medium build and is around 5ft tall. She is described as having short brown wavy hair and was last seen wearing a bright yellow puffer coat, light coloured blue jeans and flat black shoes."
If you have seen Nikki or have any information about her whereabouts, please contact Nottinghamshire Police on 101, quoting incident number 238 of 28 April 2018.