Paige Chivers was last seen boarding a bus near her home
Police in Lancashire have made a fresh appeal for information on a missing teenager on her 17th birthday.
Paige Chivers has not been seen since she left her Bispham home in August 2007 following a family argument.
Officers have released new images of Paige and a video appeal has been published on the force's website.
The investigation into Paige's disappearance is the most heavily resourced inquiry by Lancashire Police in the past 18 months.
The new pictures show Paige at a wedding two months before she went missing and on Blackpool beach when she was 13.
Det Ch Insp Dermott Horrigan, of Lancashire Police, said: "Despite the passage of time, we still want people to come forward with information, particularly anyone who has had contact with Paige... since she left the family home on 23 August 2007.
A man was arrested and bailed over Paige's disappearance
"People should be left in no doubt that this is a live investigation and we have many lines of enquiry that are on-going to find Paige."
Officers believe there are people in Blackpool who know what has happened to the teenager.
A £2,000 reward is being offered for any information that helps police resolve the case.
Last week police arrested a 40-year-old man in connection with Paige's disappearance. He has since been released on bail.
Paige is described as white, 5ft 5in tall, with brown hair and a Playgirl tattoo on the back of her neck.
She was last seen carrying a blue or purple suitcase and boarding the number 11 bus at Ashfield Road, Bispham.
Footage of Paige Chivers has been released by Lancashire Police
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