A cluster of flowers and candles marks the spot where Jodie Chesney, 17, was stabbed in a park in east London in an attack with no obvious motive.
In honour of her favourite colour, purple ribbons have been tied to a railing, alongside a message also written in purple: "Choose life, drop the knife! RIP Jodie."
Jodie's memorial is one of dozens to be found on roadsides, parks and outside victims' homes as Britain struggles to tackle a surge in knife crime.
Outside the house where she was stabbed in Croydon, London, a pile of teddy bears and flowers had been left while the police cordon was still in place.
"Two beautiful lives have been taken tragically," read one message. "Condolences. Rest in perfect peace."