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Christina Aguilera, Emma Roberts

Alexandra Wyman/Getty Images; Dimitrios Kambouris/WireImage

Welcome to Trending & Fading! It's our new, totally definitive, way scientific, not-to-be-questioned roundup of what's way in, versus what's on its way out.

This week, it's all about the eyes: We're seeing giant cat-eye sunglasses on some of our favorite starlets (hi, Emma Roberts!), and bold eye makeup behind those statement shades (what's up, Kristen Stewart).

Meanwhile, with summer long over, the loud color blocking trend we saw on dresses and shoes, particularly in shades of purple or neon, is looking kinda tired, especially next to the richer tones we're seeing on lips and in hair color. Ditto with Kool-Aid-dipped ends in one's hair, so sorry Christina Aguilera.

What else is in and what else is out? Let's take a look in our new gallery.