The High Court has sentenced Ruth Kamande,24, the reigning Miss Langata Prison, to death.
Justice Jessie Lesiit made the ruling at the Milimani law court on Thursday.
Lesiit said she had no other option but to send her to the hangman’s noose, as she deliberately stabbed her boyfriend.
Kamande had been found guilty of killing Farid Mohammed, 24, in 2015.
The judge held that Kamande acted in malice adding that her actions proved the same.
The prison beauty queen had defended herself by telling the court that she had discovered that her boyfriend was undergoing HIV treatment and threatened her when she confronted him over the matter.
“I want young people to know that it is not cool to kill each other. If you have an issue with a boyfriend, just walk away and forgive,” said Lessit.
The judge said although the Supreme Court held that death sentence is not mandatory, Kamande did not deserve mercy.
She said she was not remorseful and that she stabbed her boyfriend 25 times.
Justice Lesiit, termed the killing as gender-based violence, adding that she was manipulative and controlling.