A woman pimp has admitted luring girls as young as 12 into prostitution by getting them hooked on crack cocaine.
Fiona Walsh, 32, groomed them with clothes and other gifts before introducing them to Class A drugs.
Once they were addicted, she began offering them to customers at her home or in the streets, Inner London Crown Court was told.
Walsh, from Kilburn, west London, pleaded guilty to four counts of child prostitution and supplying drugs.
She befriended the girls having met them while out shopping or through mutual acquaintances, the court heard.
Police believe up to five girls may have fallen into her clutches, all of whom ending up running away from home for up to two years.
One is undergoing psychiatric treatment.
Walsh changed her not guilty plea and admitted four charges on an 18-count indictment spanning nearly six years.
They were one count of causing a child to engage in sexual activity and supplying her with crack cocaine and attempting to procure a second youngster to have unlawful sexual intercourse and supplying her with hard drugs.
She pleaded guilty at an earlier hearing to conspiracy to supply class A substances while on remand in Holloway Prison.
Joanna Korner QC said the 13 outstanding allegations would be "left on the file".
Judge Roger Chapple told her a prison sentence was "inevitable". Walsh was remanded into custody until sentencing on 9 May.
Det Supt Dave Eyles said the girls' bravery in speaking out against Walsh was decisive in securing a guilty plea.
"Walsh preyed upon vulnerable young girls, befriending them, supplying them crack in return for sexual intercourse with men," she said.
"We can only speculate on how many others she successfully corrupted or tried to corrupt over the years."