A woman who stabbed a female love rival through the heart after being accused of flirting with her girlfriend is facing jail.
Sahkira Loseke, 22, bled to death while a doctor performed open-heart surgery in the middle of the street after Siobhan Collins-Grant, 26, allegedly knifed her through her breast.
Collins-Grant charged at Ms Loseke screaming her name after they crossed paths in Chalk Farm, north London, on September 8 last year.
Ms Loseke looked down in horror to see the kitchen knife sticking out of her chest and wrenched it free before collapsing to the ground.
Collins-Grant fled the scene, returning briefly to say: "What have I done?" and throw the weapon into nearby Regents Canal.
Emergency services rushed to the scene and open-heart surgery was performed on Ms Loseke in the street but she was pronounced dead just before midnight.
Collins-Grant denied murder but admitted manslaughter and prosecution have now accepted her plea.
A charge of having an offensive weapon, which she also denied, was ordered to lie on file.
The pair had come to blows at a nightclub last August when the victim accused Collins-Grant of chatting up her lover, Savannah Simpson, the Old Bailey heard.
The pair were thrown out by bouncers at Lighthouse Bar in Shoreditch but friends were told they had later settled their differences.
Collins-Grant had been staying with her friend Charlie Crawford-Nathan but had been kicked out the day before the killing when her host discovered she had been bad-mouthing her behind her back, the court heard.
She was accused of sleeping with another woman's boyfriend and was told her clothes would be burned unless she collected them from a mutual friend's house.
Residents were disturbed by a group of women shouting in the street outside when Collins-Grant arrived with four friends for back-up before the killing, the court heard.
Oliver Glasgow QC, prosecuting, said: "The reason for this sudden outbreak of fatal violence within the group appears to be ill-feeling between the defendant and other members of this group including the deceased.
"The defendant and the deceased had had a row at a nightclub a few weeks before.
"Sahkira Loseke had accused the defendant of making advances towards her girlfriend.
"Sahkira Loseke had struck the defendant and the two of them were thrown out of the club.
"Their friends believed they had resolved their differences but given what was to happen on September 8 that was clearly not the case."
Collins-Grant, of no fixed address, admitted manslaughter and is due to be sentenced today.
Sally-Anne Russell, from the CPS, said: "The circumstances of this case demonstrate that carrying knives can have grave consequences for all those involved.
"In this situation, it has led to the tragic death of a young woman who had her whole life ahead of her.
"Collins-Grant has admitted to unlawfully killing Miss Loseke when faced with the evidence presented by the prosecution.
"Our thoughts are with the family and friends of Sahkira Loseke."