We love Holmes' hair color the way we first knew it -- one uniform shade of rich brunette.

Gomez's dark strands bring her a grown-up sophistication. The slightly lighter color on her ends gives the look some extra umph.

As the pastel trends of spring and summer fade, silver fall hair colors come into view. "Granny hair" has become especially trendy thanks to celebrities like Kelly Osbourne and Nicole Richie -- but it's not the professionals' favorite hair trend.

Granny hair consists of "extremely bleached, cold-toned hair," explains Garcia, who says that the color is "difficult to maintain and very damaging." However, granny hair is a major fall hair color trend that looks particularly fierce on short-haired women, who want a trendy, irreverent edge.

Just be mindful that if you're over 35, silver hair can start to look a little too authentic, if you catch our drift. This trend is probably best suited to the under-30 hipster contingent.

Mamet finds her edge with a hip, metallic shade.

Goodwin's light silver hue matched with a short pixie cut creates an ethereal, androgynous look.