Everyone who was in high school when "Mean Girls" debuted in 2004 has (hopefully) long since graduated, but there's no denying that Tina Fey's hit teen comedy, which turned 10 last year, has managed to stay fetch way beyond its years.

Aside from teaching us how to (or, really, how not to) navigate the jungle that is high school and giving us a lifetime of quotes to insert into almost any social situation, "Mean Girls" also offered us fashion advice-- some valuable and some, not so much. To celebrate October 3rd (aka "Mean Girls" Day), let's take a look at what's grool enough to survive a decade, and what deserves a spot in the Burn Book.

Graphic tees: Still fetch

T-shirts with attitude are big in 2014, from
T-shirts with attitude are big in 2014, from teen boutiques to high-fashion runways. One popular, and fitting, theme for these tell-all tees? "Mean Girls" quotes, duh. Take your pick at etsy.com. (Credit: YouTube/Etsy)

Pink: Still fetch

Pink still reigns supreme in 2014-- in fact,
Pink still reigns supreme in 2014-- in fact, one of the top hair trends is adding a pop of the color to your everyday (not just Wednesday) look. Even Pantone's color of the year, radiant orchid, is channeling the girly hue... though we can't guarantee it's close enough to score you a seat with the Plastics at lunch. (Credit: Paramount/L'Oreal)

Crop tops: Still fetch

Gretchen Wieners wasn't allowed to wear hoop earrings,
Gretchen Wieners wasn't allowed to wear hoop earrings, but the girl knew how to rock a crop top-- one of 2014's hottest trends. But to keep it classy, pair the look with more modest bottoms, like maybe some wide-leg pants ... oh, and don't wear it to gym class. (Credit: YouTube/Nordstrom)

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Feminine menswear: Still fetch

Ok, so Cady Heron didn't quite get it
Ok, so Cady Heron didn't quite get it right, but she did know how to pull off menswear in a pinch (thanks, Damian). The trick to pulling off menswear today, ladies, is just to opt for something a little more polished-- and a lot more tailored. (Credit: YouTube/Zara)

Big hair: Still fetch

Gretchen Wiener's hair was full of secrets... our
Gretchen Wiener's hair was full of secrets... our hair is full of surf spray and dry shampoo. Same voluminous effect though, right? (Credit: YouTube/Handout)

Risque Halloween costumes: Still fetch

"In Girl World, Halloween is the one night a year when a girl can dress like a total slut and no other girls can say anything about it." Well, we're pleading the fifth on this one... but you can get a costume with a striking resemblance to Regina George's at HalloweenCity.com today. Just putting it out there. (Yes, there are mouse ears available, too.) (Credit: YouTube/Halloween City)

Velour tracksuits: So 2004

Sorry, Mrs. George, but being a cool mom
Sorry, Mrs. George, but being a cool mom in 2014 means steering clear of this look. (Credit: YouTube)

Instead, try: Dressed-up track pants

2014's track pants are doing more than just
2014's track pants are doing more than just hitting the gym. Today's versions come in luxe materials like leather and silk, like these, by Parker, and are worn with elegant tops, not beat-up tanks. They're so sophisticated, Regina might even let you wear them Monday through Thursday. (Credit: Gallery Couture)

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Ultra-mini skirts: So 2004

With itsy-bitsy skirts and skin-tight tanks, very little
With itsy-bitsy skirts and skin-tight tanks, very little was left to the imagination at North Shore High School. No wonder Regina wanted to lose three pounds. (Credit: YouTube)

Instead, try: A full, ladylike skirt

Dress like a lady this spring with a
Dress like a lady this spring with a skirt that provides more coverage, but still shows off your style. Sheer or cut-out details are allowed. Tibi's eyelet skirt, pictured, is just one of many fun options this season. (Credit: Jeremy Bales)

Blindly following trends: So 2004

We don't care who you saw wearing army
We don't care who you saw wearing army pants and flip-flops... don't do it! (Credit: YouTube)

Instead, try: Doing your own thing

One of New York's style stars of the
One of New York's style stars of the moment, Chiara de Blasio, has made her mark not by following trends, but by wearing what she thinks is grool--uh--cool. "It's all about confidence," she tells us. "I never, ever think about [whether] I can pull something off, and that's how I pull things off." Now that's a girl who can sit with us. (Credit: Jeremy Bales)