The votes in favor of the article won by a sizable majority at the town meeting on island last night, 327-242.
The measure was filed by Nantucket resident Dorothy Stover, who says men and women essentially have the same body parts, but only women have been required to cover up.
"For something to be sexual, it's personal to themselves. The whole body can be a sex organ, it's personal," Stover said at the meeting.
Support was mixed — resident Lisa Williams was against the idea and that it further advances equality for women.
"I don't need to vote in favor of going topless at the Jetties to prove that we are equal," she said.
The measure now needs to go to the Attorney General's office for approval.