For me it's:

Pants below the natural waist. What can I say, I grew up during the Britney Spears' Time.

Long socks with shorts. Also, invisible socks, apparently I just hate crew or 1/4 crew socks.

ADDENDUM.
This popped up in my feed I see that no one has defended capri pants, yet...I like how at some point in society, a "cupped" clothed ass was considered so provocative.

I've spoken to a couple of my friends who have mentioned that sometimes they wear a special outfit or dress up in order to feel better/get out of a lull. Even when I'm feeling pretty good on the emotional front, I've noticed that I have some favorite pieces I regularly cycle through.

Do you have a favorite outfit, piece of clothing/accessory, type of fabric/style, or costume piece you enjoy wearing? What is it? How does that piece make you feel when you put it on? Do you wear it in public? Does the piece have any sentimental value? Not a totally related question, but if you were a cartoon character who wore the same outfit every episode, what would your outfit be?

T'was picking fruit down under, where
I learned the truth of underwear
Davenport made the best boxer
costed more but last forever

At first my junk was hanging loose
no more briefs snuggling like a noose
but soon I loved it hanging free
it's quicker when you have to pee

Decade later holes not in sight
Bought some more in case they might
Thought they'd be with me till the end
Thirty years they've been my friend

Now I'm down to last seven pair
Out of business they went I fear
Brought down low by cheap knock offs
Where oh where is my Undie Guru now?