White Blouse/Chemise

I am looking for a white blouse/chemise at the moment. I want one that fits perfectly in normal length and one which could be also worn as a dress.

So I was pleasantly surprised as I flipped through one of the H&M campaigns:

69,95€

29,95€

Burberry:

140 Pounds

195 Pounds

Zara:

(source: hm.com/de, zara.de, burberry.com)