Long to Short Hair

Heather Mills stuck to a long, loose, highlighted blonde style for years. Until she made a big change in July 2009...The busy mom and activist (who is also opening a restaurant) cropped her, bleaching out the spiky layers in platinum and grayish tones. The cut is certainly lower-maintenance, but those roots will be killer.

Astrid Stawiarz, Getty Images | Bauer-Griffin

Twilight leading lady Kristen Stewart chopped off her signature layered locks in June. Looks like she's already getting into character for her role as Joan Jett in The Runaways.

Matt Sayles, AP; Bauer-Griffin

Gennifer Goodwin made a seemingly overnight tress-formation, appearing at the He's Just Not That Into You premiere on February 2 with long, wavy locks. Two days later, she rocked a straight, shoulder-grazing bob. We're loving the new do - how about you?

Paris Hilton has joined the Katie & Posh Club, shrinking her long blonde locks into a chin-length crop. We say "shrinking" because it's hard keep tabs on the extension-fanatic's true lock length. But hey, when you have your own line of hair extensions (Hilton's line is called DreamCatchers), your chameleon-like hair length is your best advertisement. Before you follow Hilton's, lead check out what stylist to the stars Christo told StyleList about how to pull off a short do.

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Jessica Alba went from a flowing romantic 'do to a chic and edgy bob.

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Victoria Beckham: Before the Cut

There was a time when Posh had long, flowing locks (well, extensions) before she went for her dramatic razor cut bob that kicked off the trend in Hollywood.

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Victoria Beckham: Short Do

"Victoria has a great bob that works with her style," says Christo. "There are not too many hair textures that can pull off this look; it has to be fine and straight." One advantage of a shorter cut? "They are fun to play with and can be very versatile. Ask your stylist how to play around with styling tools to create different looks."

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Katie Holmes: Before the Cut

When she started dating Tom Cruise, Katie's hair was long and straight.

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Katie Holmes: Short Do

"Katie Holmes can pull off a short cut," says Christo. "She went from a young pretty girl to a sexy woman who turns heads." But Christo warns, "Don't forget you need to be backat the salon 4-6 weeks after getting a short cut. Be prepared to put the money and time in."

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Anne Hathaway: Before the Cut

Before she chopped her locks for her upcoming film Dancing With Shiva , Hathaway was known for her long, thick hair.

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