Heather Johnston, also 19, was sentenced to 10 years' probation for her role in the February 2007 heist in Acworth, northwest of Atlanta.
The two were caught on tape as they appeared to rob a Bank of America branch in a supermarket. They admitted to plotting with a teller to take the money and later going on a shopping binge that included a stop in a fashionable hair salon.
Cobb County Superior Court Judge Mary Staley urged Miller to learn from her crimes.
"I want you to correct yourself," Staley told Miller, a former exotic dancer. "There's no reason you can't become a productive citizen when you get out of jail."
Miller's mother and sister hugged and kissed her before deputies led her out of the courtroom.
Benny Allen - who worked at the bank as a teller - was sentenced to 10 years, to serve five. The judge imposed an additional penalty on Allen because she said he did not testify truthfully in the trial of Michael Chastang, a co-defendant convicted of his role in plotting the heist. Chastang is to be sentenced Tuesday.
Johnston was the first of the group to plead guilty, speeding up the prosecution of her co-defendants.
During her sentencing hearing, Johnston took the witness stand and between sobs apologized for hurting and embarrassing her family and friends.
"A lot of people look down on me," Johnston said. "I feel terrible. I want to set a good example for my little sister. She's a great kid. I don't want her to end up like me."
