Usually, stories about women walking around topless are fantastic.  So it's a shame that this one turned out sad.

28-year-old Kristin Macias of Gardner, Missouri, is accused of leaving her nine-month-old daughter alone in her car Monday night while Kristen tried to go into a bar... TOPLESS.

It was almost 90 degrees outside.  So Kristin probably wasn't too hot... what with her lack of shirt... but her baby WAS.

Fortunately, Kristin's nudity caused something of a scene... drew a crowd... and they spotted the baby in the car before anything bad could happen.

Kristin was arrested and charged with endangering a child.

There's no word WHY she was topless or if she was drunk or high at the time... but the prosecutors say she has an unrelated pending charge for HEROIN possession.

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