The board, in a 6-2 vote Wednesday night, agreed to allow single-strap and clear spaghetti strap dresses instead.
The Courier News of Bridgewater reports board members were concerned a strapless gown mishap could get posted online and embarrass a student.
Some parents last month criticized Readington Middle School Principal Sharon Moffat for prohibiting the dresses at a June dance because she said they would distract boys. Some parents said such a statement was sexist while others said they had already purchased their daughters' dresses.
A committee will review the dress code and make recommendations in September.
Information from: Courier News (Bridgewater, N.J.) , http://www.mycentraljersey.com