Police are becoming increasingly concerned about the welfare of a 12-year-old girl who has gone missing from home.
Tia Sharp was last seen leaving her grandmother's home in New Addington, south east London, at around midday on Friday.
She told relatives she was going to the Whitgift Centre in Croydon town centre.
Tia is described as white, slim build, 4ft 5in tall and wearing glasses.
Tia was last seen leaving her grandmother's house on Friday
The clothing she was last seen wearing is described as a yellow bandeau top over a white bra with visible cross straps, light grey leopard skin leggings and black and pink Nike high top trainers.
Police believe Tia had a small amount of cash with her, but no travel card and she did not have her mobile phone.
Tia is known to frequent the Croydon, Mitcham and Wimbledon areas.
A spokesman for the Metropolitan Police said: "She has not gone missing before so this is of concern.
"Officers from the missing persons unit and the local borough are making inquiries to try to track her down, including checking CCTV footage in the area and liaising with other forces."
Police are becoming increasingly concerned about the welfare of Tia
Twitter has been flooded with appeals for information, with family members and celebrities urging the public to help locate the missing 12-year-old.
Jasmine Hart tweeted: "Hey guys I really need your help! My 12 year old niece called Tia Sharp has been missing for over 24 hours.
"She was last seen yesterday in New Addington, Croydon wearing a yellow t-shirt and glasses
"She's very smart and old enough to know how to get around and was given money to buy shoes
"It is unlikely that she ran away as it is completely out of character which is why this has become so serious
"If you see her or know something, call the police immediately. Please help!"
Tia is described as white, slim build, 4ft 5in tall and wearing glasses
Choreographer and former Strictly Come Dancing judge Arlene Phillips, UK grime singer and ex-So Solid Crew member Lisa Maffia and glamour model Nicola McLean were among those who added their support to the search by re-posting appeals on the social networking site.
Anyone who has seen Tia or knows of her whereabouts should call Merton Police on phone number 101, quoting reference 12MIS025216