Pamela Phillips will spend the remainder of her life in prison.
Pima County Superior Court Judge Richard Fields on Thursday sentenced Phillips to natural life in prison without the possibility of parole for the 1996 murder of her ex-husband Gary Triano, a Tucson businessman.
She also was given 25 years to life for conspiracy to commit first-degree murder.
Phillips professed her innocence at the sentencing Thursday morning, turning to the gallery to make her statements.
"I'm innocent! I'm innocent!" Phillips said. "This is a nightmare."
Phillips was found guilty in April of having Triano killed with pipe bomb, which exploded in his car in the parking lot of La Paloma.
Read more in Friday's Arizona Daily Star.