Reusing bridesmaid dresses?

🦄 harley the creature 🦄 • bi | artiste | music addict | just birthed my first baby boy

I have three bridesmaid dresses and I want to rewear them on date nights and for special occasions, but I heard someone say that rewearing bridesmaid dresses is tacky and "obvious" (whatever that means), like it's some sort of fashion faux pas. What does she mean and does it really matter?? I think they're quite lovely and it would be a shame to not use them again!