Take a walk outside

I'm absolutely infatuated with this idea of "underwear as outerwear". I know it's been quite a few months since this trend debuted on the catwalks but it's finally entered the public domain with the ever-exposed celebrity stalkings. My infatuation does not stem from wanting to see people in their underwear - before I am misunderstood, rather about this entirely taboo area that was always kept behind closed doors. It's a whole new frilly, sheer world out there!
For one, I can't stop eyeing this "The Lake and Stars" romper... Am I now able to wear this outside my safety zone of the front door?