Raquel Neto Furtado De Andrade who had already married three Nigerians to help give them the right to stay in Britain was caught minutes before she could tie the knot with her fourth husband for cash.
Suspicious staff at the register office tipped off immigration officials about the bigamous 22-year-old, who used the same wedding dress at each ceremony.
The fourth groom, a 32-year-old Nigerian pictured above, was arrested with her and has been kicked out of the country.
De Andrade, from Tottenham, north London, was charged with two counts of bigamy, two counts of facilitation and one count of perjury. She admitted the charges in February and was jailed at Harrow Crown Court on Tuesday.