A mother's social experiment is a big hit online.

FOX's Krystin Goodwin has the details:

A pregnant woman in New York City gaining online fame after awarding the first man who gave her his subway seat a bronze trophy.

38-year-old Yvonne Lin is pregnant with her second child and says while many women offer their seats on the train, men don't.

She created a tiny statue. Its a hulk-like man shredding his shirt while flexing his muscles. It reads "#1 decent dude. First man to offer subway seat to pregnant woman throughout two pregnancies."

Lin says she carried the trophy around every day for eight months until finally one man, a 34-year-old Army veteran offered her his subway seat.

She shared a photo of the man with the trophy on Instagram. The man says he was just "doing the right thing".

I'm Krystin Goodwin, FOX News.

Follow Krystin Goodwin on Twitter: @KrystinGoodwin