I would never show any bit of underwear at work, ever.
No bra strap, no lacy camisole, no slip hem.
Unless you are in some really off-beat or creative field where anything goes and you see it modeled by your co-workers and supervisors.
Of course my work environment is more conservative for sure, but I would not advise it for a young woman in any of the usual workplaces. It's not a typical part of business casual or even casual workwear, and to me has more of a downside of not being taken seriously by both women and men with whom you might work.
To me it just has so many more ways to go wrong or to be misperceived than lots of other things one can do with one's outfit to be creative or individual.
Clearly I'm a fan of rather be safe than sorry, but I think that can be good as a young employee.