Russia's "most notorious hitman" has married a glamorous model and psychiatrist in prison.

Alexey Sherstobitov, 51, is serving 23 years in a high security penal colony for a dozen murders, but this did not stop him from finding love and getting married.

He got married to Marina Sosnenko in jail dressed as a 1920s gangster.

Marina was the one who first contacted the serial killer after reading his autobiography, titled "Liquidator".

Imprisoned notorious contract killer boasts of his relationship after marrying a pretty model in jail

"I felt through pages of his book how many worries, sufferings and troubles he went through," Marina said. "I felt that I really wanted to support him and share his troubles."

"I wrote him via internet at the end of October 2015. He answered. Our relations developed fast."

Imprisoned notorious contract killer boasts of his relationship after marrying a pretty model in jail

They married the following year, posing as a 1920s US prohibition gangster and a flapper in fancy dress. Since then, Sherstobitovn, who was formerly a member of Russia's interior ministry force, has been boasting of his extraordinary behind-bars relationship to a glamorous "model and psychiatrist."

Sherstobitov still has 13 years to serve in his high-security facility in Lipetsk for conjugal visits - but despite claiming he is a reformed man who retrained as a plasterer and an author there is no sign of an early release.

Imprisoned notorious contract killer boasts of his relationship after marrying a pretty model in jail

Imprisoned notorious contract killer boasts of his relationship after marrying a pretty model in jail

Imprisoned notorious contract killer boasts of his relationship after marrying a pretty model in jail

Imprisoned notorious contract killer boasts of his relationship after marrying a pretty model in jail

Imprisoned notorious contract killer boasts of his relationship after marrying a pretty model in jail