Interesting how many of us have had similar feelings and sometimes related to a similar outfit, although Fashintern, you seem to feel the opposite in a way! But then, you have long wavy hair. Maybe that makes a difference.
I think I lost the sense of "pretty" in that outfit. Too "masculine" for me (wouldn't be for another, and I don't really like the terms masculine and feminine but whatever.)
Also—-uncharacteristically—I wasn't too happy with my new haircut with bits of colour (no pics yet -- trying to get decent ones but it's hard in the light!). So it all went together with awful weather to feel yuck!
Lisa, glad the size changed helped with those Cons! Hope you enjoy them!
Thanks for commiserating everyone. I do feel better for having identified the issue. It's so funny when an item you adore ends up displeasing you on another day and it's great to have the tools to figure out why.