Some shoppers at the Martin's store on North Bittersweet Road in Mishawaka were checked out by cashiers who could barely see over the register Friday.
The store invited 11-year-old Rosa Trippel and her younger brother, Evan, to serve as cashiers for the afternoon after hearing about a replica Martin's they built in their basement.
The siblings spend hours playing in their Martin's store, where Rosa serves as the manager.
They got to put the skills they've been practicing there to the test by checking real customers out Friday.
After some training, the two took turns scanning items and bagging them.
"I like being the cashier more," Rosa said. "I just like scanning the stuff."
Rosa and Evan helped about half a dozen customers, who all walked away with smiles.
And, many were impressed by what they saw.
"They did a great job," said shopper Toby Stephens. "They asked me if I found everything alright, bagged it up nice."
Store management was also impressed by the siblings.
They say they'd be happy to have them on staff when they're old enough.
"They have exactly what we look for," said Corporate Training Coordinator Paulette Collins. "That smile, they have sincerity, they looked at each customer."
Rosa and Evan walked away from the experience with some new gear for their basement Martin's.
The store gave them official uniforms, price tags and sale stickers.
"I think it's going to make it more efficient and more official," Rosa said.