It happened at 8:47 p.m. on Tuesday, November 13th at the Walmart at 1251 Centerville Road in Wilmington.
Police say the men removed clothes from a display and put them on.
When an employee tried to stop them, police say one of the suspects threatened him with a gun.
The suspects are described as:
Suspect 1: Black male, large build, 30 to 38 years old, wearing a dark color shirt and jeans. Police say he was armed with an unknown type handgun.
Suspect 2: White male, thin build, 25 to 34 years old, wearing a blue color shirt.
Police say the men fled in a dark gray 2-door Lexus.
Anyone with information is asked to call Delaware Crime Stoppers at 1-800-TIP-3333.