It happened at 8:30 a m. inside the Food Market Store located on the 2400 block of Germantown Avenue.
One suspect pointed a handgun at the clerk while the second tried to open a locked door to gain access behind the counter.
The clerk opened up the cash register drawer to the suspects before locking herself in a back room.
The pair grabbed an unknown amount of cash from the drawer before casually leaving the store - even taking time to pick up some of the stolen money they dropped by the front door on their way out.
Police describe the first suspect as a black male, 25 years-old, 5'6" tall with a medium build. He was wearing a burgundy hooded sweatshirt, tan pants, white sneakers, white face mask, and purple or pink gloves.
The second suspect is described as a black male, 25 years-old, 5'8" tall with a thin build. He was wearing a black hooded sweatshirt, black pants, black boots, black face mask, and black gloves.
Anyone with information on this robbery should call police at 215.686.TIPS (8477) or text a tip to PPD TIP (773847).
All tips will remain confidential.
VIDEO: Click here to watch the surveillance video