Nothing H&M or other fast fashion brands do can even remotely be called "sustainable". The business model itself is too toxic.

H&M releases [two] ‘conscious collections’ a year and calls themselves sustainable... how about you make all your clothes sustainable (and properly disclose how they’re even sustainable). How about you pay your workers liveable wages and give them good working conditions.

Good suggestions for how to actually approach sustainability, but still leaves me so dismayed at the problematic impact fashion has. Ruined the entire industry for me, ugh.