Scientists Develop App That Eliminates Bra-Size Guesswork

"Thirdlove" app claims it can eliminate the need for help to find the right bra.
1:59 | 08/16/13

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Transcript for Scientists Develop App That Eliminates Bra-Size Guesswork
The new high-tech way to find the right bra size. Josh. See you later, josh. They've come up with an app, that once and for all, takes all of the guesswork out of getting that perfect fit. Abc's aditi roy takes one for the team. She has the story. Reporter: They don't call them intimates for nothing. Procedure pretty close here. Getting fitted for a bra can be uncomfortable. You don't want to be breathing out. Reporter: Even embarrassing. But coming soon, a free app called thirdlove. Designed by computer scientists claims they can get rid of the well-intentioned bra-fitter, allowing yu to find the right bra, using just your phone. The technology we use, takes two-dimensional images, like a photo. And turns it into three-dimensional data. Reporter: Here's how it works. You take front and side pictures, wearing a tank top. The app even tells you when you have the right angle. The company says it only takes seconds for the app to size you. The only catch -- it doesn't tell you your exact size. Reporter: Instead, it routes you to an online store, where all of the bras are your perfect fit. Danny tested thirdlove. It came in the mail. And it fit perfectly. Reporter: Other women we met are still a bit weary. You have to take photographs of yourself and send it to someone you don't know. Reporter: The makers of the app insist their site is secure. All of our data is private. And it's only used internally by our scientists to make our fit better. Reporter: The manager of only hearts lingerie store says pictures can't replace numbers. Old-school in this case is the best way. Absolutely. Reporter: What measures up best? Old-school awkwardness? Or touchless technology? The women we met say the right fit is what makes you feel most comfortable. For "good morning america," aditi roy, abc news, new york.

This transcript has been automatically generated and may not be 100% accurate.

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