Help with Dating lingerie piece

[Klara's Vintage Arcade]

Hi everyone, I'm a new user to VFG. I would greatly appreciate some help dating a pretty piece of vintage nightwear. My intincts say 40s based upon the labelling alone, but I'd like to be 100% sure. I know you're a knowledgeable lot ;-)
Apologies for sideways images.

Love and peace x

 

[poppysvintageclothing]

It looks 40s to me as well and looks to be made of silk chiffon georgette.

 

[morning-glorious]

Yes, I agree with 1940s. Pretty!
Jen