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Rule # 1: No White Pants After Labor Day—Or Before Memorial Day
3.1 Phillip Lim, Fall 2012

Fashion initially warmed up to this idea by producing a ton of ivory winter whites. Now, they're going all in. Stark white in the winter time (and currently, for spring) is happening. Click through to see more white-on-white looks.

Rachel Comey, Fall 2012

The tweed jacket anchors the white top and pant.

Rahel Comey, Fall 2012

White on white on white—why not?

Prabal Gurung, Fall 2012

Like a snow fairy.

Rule # 2: No Pastels Past Easter
Cacharel, Fall 2012

One of the biggest trends for fall is pastel colors. And Spring 2012 was filled with dark colors. Go figure. Maybe global warming is confusing all of the fashion houses? Whatever the reason, there are so many cozy, pretty pastels to choose from. Click through to see more pastels.

Sonia Rykiel, Fall 2012

Light hues, yet so wintry.

A.P.C., Fall 2012

Mix a little short with a fluffy sweater.

Chloe, Fall 2012

One of our very favorite fall looks.

Chloe, Fall 2012

The heavy fabric is key.

Rule # 3: No Pattern Mixing
Dries Van Noten, Cacharel, Fall 2012

Look for the craziest prints you can find and mix them all together—because it's fun! (And it can look very chic.) Click through to see more pattern mixing.

Miu Miu, Fall 2012

Miu Miu—you crazy, girl.

Dries Van Noten, Fall 2012

Dries loves mixing prints.

Rule #4: No Denim on Denim
Levi's, Fall 2012

You KNOW we're always breaking this rule. It's one of our favorite pastimes. This is America, if there's anywhere you can wear head-to-toe denim, it's here. Click through to see more denim-on-denim looks.

Levi's, Fall 2012

Menswear denim.

Levis, Fall 2012

Skinny-all-over denim.

Rule #5: Dressing Your Age

Whether you're 12 and want to channel Tavi Gevinson's granny style or you're a granny and want to wear playful kiddie-inspired looks—GO FOR IT. Dressing your age is for people that don't know how to have fun! Click through to see more anything-but-age-appropriate looks.

Balenciaga, Fall 2012

Double rule-breaker! White pants and a youthful graphic!

Balenciaga, Fall 2012

Another cool graphic sweatshirt at Balenciaga.

Cacharel, Fall 2012

Proof that a girly dress plus cutesy Mary Janes can still look grownup.