Preppy.

For me it is dressing like you belong to particular group of people, looking like stereotypical person of that group. For example head to toe metalhead, biker, pin up/vintage girl, goth, punk, socialite bombshell dancing in the club look etc. I may enjoy elements from whatever style/group, but this must be strong individualist in me that never wanted to look like one of the group, even in teens

I am not into overly girly and traditionally sexy looks too.

bombshell and girly/cute. i can/will do body con pieces, and i can/will do feminine pieces but cannot do head to toe of there of these looks.

Definitely bombshell. Pretty is pretty much outside my vocabulary, too. I can mix elements from just about any other style, though.

Just remembered, we with SO went to metal music open air festival. And I had closet emergency then I ended buying black t-shirt in thrift store, with a print. That I wore with maxi skirt and with long utility shorts. The print was Tim Burton like crazy girl with text "I don't want to look pretty", loved the irony, especially in that specific location, where "pretty" may be a swear word

I'm like Neel, I like to experiment with different elements. Perhaps loud is the anti-me. Bold, graphic prints feel so unlike me. Super bright colors, really big jewelry. Even as I write this, though, I can think of items I wear that would fall into these categories. So I'm either not explaining it or haven't struck on the antimatter for me.

I think for me it's anything too polished, sweet, or classic. I feel frumpy and uncomfortable or else like I'm wearing a costume.

Corporate/business/professional dress. I don't care if it limits my career options, I will never wear mid-heel pumps with hose.

I don't know how to phrase it, but these pictures say it all.

Someone recently resurrected a thread about Dressing Your Truth and I did enjoy watching their videos, if nothing because their styles are opposite to my own. Sometimes you learn as much about your own style by observing what it is not. The anti-me, as you put it.

ETA -- MsMary defined the styles recommended by DYT as "Chico-tastic." I would add, also kind of loud.

Bascally what shiny said. I would add debutant (i realize this is a variation of prep), frou, twee, cowgirl.

I can't believe I missed this thread. This is such an excellent question. Took me awhile to think it through, because that's how anti-matter my anti-matter is to me. Anyways, I suck at the beige look (example below from http://www.slacksandco.com/). It is everything I'm not, and I couldn't even get the first thing over my head. I can't take that much quiet. It's really very elegant tho.

Oh yeah me neither, never with the beige. But I don't think of elegant so much as Kim Kardashian!
I think for me it's partly because it's very tonally off from my skin tone, and so many foundations, hose, etc have always been that way for me. So I just have a REACTION.

I can wear that slacksandco look but not in my skin color - any medium saturated shade from caramel to emerald. I can't wear a shirt dress or really a button front shirt. I think I've decided that I don't want my clothes to have too much of a crisp, structured shape of their own. I want them kind of sloppily painted on me. Oh and jumpers or even a good many vests. I like it on others because it has that butter wouldn't melt in her mouth ladylike look but I feel like a linebacker. I've tried all kinds of sleeves, from narrower to fuller and nothing feels or looks right on me. Whereas without the top underneath I could feel sleek. I can't really wear anything boxy very well. My shopping buddy observes that I can be drawn to boxy shapes and then end up rejecting them because they make *me* look boxy. She can't figure out why I can't see the obvious.

Bombshell for me. I would feel totally out of my comfort zone.

For the Vegas wedding, I would just dress to suit your own style and enjoy it.

Bling is usually a deal breaker but I saw a pair if Miu Miu sandals with crystal studded heels yesterday that could change my mind. Rest of the outfit would have to be minimal for sure. I will keep them in my "fantasy wardrobe" due to price point anyway.

This is indeed fun - glad it popped back up ! If the last clothes in the world were typical Vegas bombshell - high high heels, tight, body con dresses with exposed cleavage, and the accoutrement that went along with it (huge earrings, long pointy nails, spanx, etc etc I would rather wear a towel wrapped around me. I am obviously exaggerating, but I would just die having to wear a tight dress , wear high heels and show my cleavage. Die. Dead. Humiliated, and broken. Is that antimatter enough ? In a more general sense, retro or girly would also humiliate me beyond repair. I can feel my discomfort already. I just cannot pretend to be anything other than I really am.