Wearing nagajuban as a dress?

I just bought the most beautiful robe(?) and obi from a secondhand kimono shop in Kyoto and I asked the attendant at the store if it was ok to wear because it's just a few cm above my ankles and had no interior ties and she said yes but after doing a little research I think it might be some form of Juban (although why so beautiful just to be underwear >.<) and date-hime...if I wear something underneath (another thin robe maybe) could I wear it as a dress...like in a more modern way as opposed to traditional? Not necessarily in Japan just in general...I'm just heartbroken bc it's so beautiful and colorful and overall was relatively cheap for everything (70 USD) and wish the clerk had told me I was essentially buying the world's most expensive bra lol

What would you say if someone who bought a long slip/camisole underwear and asked you if it would be OK to wear it as a dress, since it was so beautiful? (Yes, there are beautiful underwearc)
Too bad that the store clerk didnft tell you what it was, and I am sure there are others who wear gjubanh as dress unknowingly, but since you do know nowc

it's just a few cm above my ankles and had no interior ties

This doesn't necessarily mean it's a juban. Can you post a picture of it, or find an image of it in google images that is similar? Then people can give better advice.

But personally, I'd say if it's actually a juban, it's better to just wear it around your house as loungewear, just like you might wear underwear around your house but not out in public.

Herefs a pic of the robe. It has the gundergarmenth collar but no ties and also the vertical hem is cut straight instead of with the usual flaps. The back is also cut straight and not pleated in the center. The pattern is also very vibrant which is why I didnft realize it could be underwear at first...so you can understand my confusion lol

https://www.flickr.com/photos/183173261@N07/48463310757/in/dateposted-...

Yup, that's a nagajuban, but a very pretty one!

Since it's not somewhat see-through like a lot of nagajuban are, though, I'd say that if you wanted to wear it as a wrap-style dress when you get back home, it wouldn't be a problem. It's definitely in a hybrid style. Around the house is absolutely ok too... or, you could repurpose the fabric into a more western-style wrap dress! I think the pattern would be very cute for that.