The winner receives a $5,000 grand prize.
"I can't tell you how thrilled I am for this year's field," Booble founder Booble Bob said. "These stunning women have the best breasts in the business, with brains, charm and style to boot. With finalists like these, picking one to vote on isn't going to be easy."
To vote, log on to Booble.com. Voting ends Aug. 31.