How to wear a Guayabera.

I’m a fairly hairy-chested man, but keep it trimmed as routine. My wife will often suggest that I wear an undershirt with shirts that may offer a peak of my manliness to prevent the “creepy dude” look. I absolutely love the guayabera, but it looks like an undershirt typically isn’t worn and would defeat the purpose of this warm weather attire. I’ll be visiting my brother in Miami soon and would love to have a couple of these shirts made while I’m there. Is it ok to wear the guayabera with an undershirt? Is it ok that a bit of fur be visible?