Transcript for Did Target Steal This Mom's Homemade Shirt Design?
gears to that mom who says her fashion line has become a target, if you will, of one of the biggest brands around saying one of the nation's top retailers copied her homemade design without giving her credit. Neal Karlinsky has more. Reporter: Talk about David versus goliath. This is the version I found in target and this is mine. Reporter: Melissa lay says the future of her homegrown t-shirt business which she runs out of her Oregon garage is being threatened by one of the nation's leading retailers. This is bigger than a simple, you know, mrplagiarism. The shirt that turned this mom entrepreneur in a fighter is this blank tank top designed by hand and sold online for a year. Which is why she was stunned when friends started sending her photos of this, what she calls a rip-off, reproduced she claims and sold at target. Here it is at this target store. Just like hers except it's about half the price. 12.99 here. I put so much -- I mean all knife heighters. I screened print till my body aches and that same design being mass produced and someone else making money off of your products, I'm still in shock. Reporter: After her story picked up steam on social media, target took notice sending Melissa this note saying they are taking this matter seriously and have begun an investigation. Melissa says she can't afford a big legal battle. She just wants credit and for target to stop selling the shirt. For "Good morning America," Neal Karlinsky, ABC news, Seattle.
This transcript has been automatically generated and may not be 100% accurate.