Police said they were called to the Aerie store at King of Prussia Mall around 2:45 p.m. on Wednesday, April 24.
A witness said the suspect was holding a cell phone over the top of the dressing stall, according to authorities. She alerted staff and the man fled before police arrived, the department said.
He was described as a man between 20 and 30 with a medium build wearing a black hat, a long-sleeve Philadelphia Eagles sweatshirt, dark pants, and black shoes.
Anyone with information is asked to call Upper Merion PD at 610-265-3232 or submit a tip through Crimewatch.
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