Anything plaid or resembling plaid in any way. Or stripes.
I'm also not a fan of most flat shoes. I love my heels, even though I'm tall without them, I just think they look prettier.
I don't like jeans that are any colour other than black, blue (denim blues, not bright blue), grey, or in some cases white. IMO, jeans just aren't supposed to be red, yellow, green, and so on.
I absolutely do not like the colour orange. I never have. (I won't even drink orange juice, except when it's mixed in with a pink cocktail or something.)
I don't do pearls, either. They're a bit too "upper-class conservative" for my tastes. I have some silver-ish pearl earrings that I will occasionally wear with black or grey clothes, but not white pearls.
I'm a very picky dresser. I have a certain style, and if whatever is currently in fashion isn't my style, I'll wear what I like anyway, people will just have to get over it.
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'El reloj, no avanza
y yo quiero ir a verte,
La clase, no acaba
y es como un semestre"