Hi there!
I'm curious to know if you've explored any other options for clothes, besides ZARA because I have checked that but wasn’t able to find which fits my style. However I've found a online store called mamastyle store, and their outfits are quite good and comfortable too. I think you'll find something there that will suit your style perfectly...
https://mamastyle.store/maternity-clothing-reviews/best-maternity-pajamas