Police have released new pictures of a girl who's been missing from her home in Milton Keynes for a week.
It's thought 16 year old Cailey-Anne Payne was last seen in the Acton area of London on Saturday morning.
Officers say they're treating her disappearance very seriously.
"As with any vulnerable young person, if you're 16 and you're away from home, that naturally causes concern for the police," Det Supt Barry Halliday told ITV News Anglia.
"If Cailey-Anne is watching this, she's not in trouble, but we do need her to pick up the phone, and not necessarily talk to the police, but talk to a friend, a family member. Just let us know that she's safe and well."
More top news
Generally cloudy with occasional outbreaks of rain during the morning. Some glimpses of the sun are possible.
We're one week into December and the countdown to Christmas is well underway. Read the latest in ITV News Anglia's Christmas Shout Outs.
The grandparents of missing serviceman Corrie McKeague have travelled 425 miles from their home in Scotland to retrace his last steps.