Help dating this embroidered white cotton blouse

[DaisyandStella]

Hi!
I am a bit baffled on dating for this blouse. I purchased from an estate that had loads of 1900s and 1910s blouses and corset covers. I am starting to second guess everything I originally thought about this one so would love your opinions.

Also, as you can see in the pics, the blue sash belt is not original.
I also wonder if that embroidered bust inset is original (it is double layered hence the whiter appearance) but the blue embroidery isn't an exact match.

Thanks for any help!
Brooke

 

[anothertimevintageapparel]

This appears to be either a top to a 1920s pajama set, or a long nightgown that was cut off.
I have had cotton gowns with similar embroidery from the 1920s, early 30s.

 

[DaisyandStella]

This appears to be either a top to a 1920s pajama set, or a long nightgown that was cut off.
I have had cotton gowns with similar embroidery from the 1920s, early 30s.

Phew.. okay this makes me feel better as I was thinking around the 1920s possibly 30s.. I'm not totally losing it yet ;)
Here's a pic of inside showing inset - is it safe to assume this is not original and an add on? Again the blue color isn't a perfect match.

 

[DaisyandStella]

ahh.. now as I actually look I think the inset was originally a handkerchief.

 

[anothertimevintageapparel]

I agree, the inset is not original. It was added for modesty.

 

[poppysvintageclothing]

I have had nightgowns like this in the past. I always felt they were 20s or early 30s.

 

[Rue_de_la_Paix]

I have run across these also over the years, always as a nightgown. I always felt that they were newer than 20s or 30s, but I am not sure on this one.