Once you complete a Subeautique set achievement, can you remove one or more of those items from your wardrobe without ever losing the completed achievement?

I wanted to sell some clothes I no longer need but want to be 100% sure I wouldn't lose the achievement.

Yup, you can remove them all! You can never lose an achievement. c:

Ah, great ~ Thank you! ??(•??•??)

Oh, great! I've just wanted to ask the same question - and found the answer immediately :)