The top 10 dos and don’ts of 2012

60% of glamour.com readers say they're a DO.

59% of glamour.com readers say they're a DO.

61% of glamour.com readers say they're a DO.

81% of glamour.com readers say too kooky is a DON'T. (Still...)

We put a slew of the year's biggest stars (and their style pasts) up for a vote on glamour.com. Most improved? These three!

Most Improved: Serena Williams

97% of readers voted the tennis champion's 2004 dress a too-revealing DON'T. "Nipple alert!" warns glamour.com reader proudgirlygirl11. This year, though, you say she aced it in a more demure version—98 percent voted Do! The trick? Only a peek of décolletage.

You be a Do! Repeat after us: Supportive bra, seamless thong.

67% of you voted her 2006 festival getup a Don't ("It looks like a boho mess," confesses reader Christina Ko, 26), but 79 percent of you say her 2012 dress is a young, chic Do. She's matured right in front of our eyes, and you think her style's only gotten better.

You be a Do! High hem? Opt for heels, not boots, to elongate your legs.

78% of you say her 2011 gown is a down-to-there Don't. "If she steps on the hem," says Nicole Moss, 25, "that dress is coming down!" This year's swirly mesh Viktor & Rolf version here? It's a big, bold Do, say 65 percent of you.

You be a Do! Avoid too-low straplessness—that wardrobe malfunction odds are high.

This was the year celebs looked at one another...and got inspired.

70% of you say copying is a DON'T. But in the words of one commenter, "Miley looks gorgeous! So, haters, stop hating."

There's no question that Fifty Shades of Grey was the book of the year, with more than 25 million copies sold in the United States. But...how was it for you? Turns out 33% of you read and loved it ("It's actually a beautiful love story," says xfallenstar), but 31% said you never have and never will ("A root canal would be preferable," says LilyLavender). Final vote? 56% of you say the whole Fifty Shades thing is a Don't.

Remember when all anyone wore was black? Stars in highlighter hues are having too much fun for that. You say: Do.

81% of glamour.com readers say sporting neonwear—like actress Victoria Justice—is a DO.