Investigators said the two women, thought to be between 16 and 24 years of age, approached a Bank of America branch in a Kroger grocery store and handed a holdup note to a teller, the Atlanta Journal-Constitution reported Thursday.
Officer Wayne Delk, a spokesman for the Cobb County Police Department, said the women did not show any weapons but made off with "a substantial amount of money."
"Plenty of leads are coming in. Some good, some not so good," Delk told the newspaper. "People are calling in from all over."
"We have gotten tons of calls -- from 'That's my niece,' 'That's my granddaughter,' -- to 'I know this person from such and such,'" he said.
Karen Davis, an Acworth resident who was in line behind the robbers at the bank, said the women were very nicely dressed and remained calm throughout the incident, the Journal-Constitution said.
"They probably spent more time dressing for the robbery than actually planning it," Davis said. "It just really was the most bizarre thing in the world."