On Thursday, February 7, WWF and Loblaw Companies Limited are asking Canadians to turn down the heat and put on a sweater in honour of National Sweater Day. The event is held each year to raise awareness about the importance of energy conservation.

Wondering what to wear? Any sweater will do, but if you want to go green (since the whole campaign is about saving electricity), why not reach for something that's eco? From hemp fabrics to fair trade cotton, there are tons of ways to green your sweater-wearing routine.

Here are some shopping tips from eco-stylist Sarah Jay.

What To Wear

Local & Handmade
Support local talent and reduce the carbon impact from shipping and industrial knitting machines. With a sweater like this by Thieves, the impression you’ll leave is stylish and sustainable.

Organic & Fair Trade
The impact of conventional cotton from fibre to finish is among the most detrimental of all fabrics — it necessitates a lot of unnatural nurturing to ensure it can be grown in infertile soil. When buying brand new, seek out organic. This tiger top by A Question Of not only features one of WWF’s favourite species, its construction supports communities in Africa by providing fair wages and safe working conditions for employees.

Garments are given new life in one-of-a-kind reincarnations from Canadian label Preloved. I especially love their Cornelia sweater. Its voluminous shape and layer-ability ensure versatility within your existing wardrobe. What green good is a garment you only wear once?

The greenest sweater is one that already exists, so hit up your local vintage shop and hunt one down. Via vintage, you’re sure to score one-of-a-kind finds that represent the unique snowflake you are. You'll also help reduce the substantial and unnecessary impact of textile waste in landfills. Fact: Canadians are responsible for adding close to two million tonnes of textile waste to landfills each year.

What Not To Wear

Dry Clean Only Fabrics
The largest impact a garment has is in the post-consumer phase of its lifecycle — that means after you buy it and how you care for it. Dry clean only fabrics should be avoided altogether. The vast majority of dry cleaners use a synthetic solvent called “perchloroethylene.” Even minimal exposure to “perc” can result in dizziness, headaches, drowsiness, nausea and skin and respiratory irritation. Prolonged perc exposure has been linked to liver and kidney damage and cancer. If you must dry clean, seek an establishment that uses pressurized carbon dioxide. This is significantly less volatile for humans and the environment.

Use Eco-Detergent
When washing at home, be sure to use an eco-detergent, cold H20 and hang your wares to dry.

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  • Accessorize For Warmth

    Scarves are a perfect accessory with pure style and warmth; you can even leave them on as part of your outfit.

  • Invest In Cashmere

    A simple boatneck style cashmere sweater is the best winter investment; it is super warm and simply stylish.

  • Cut Down On Bulk

    Try clothing that is long-sleeved with a slight stretch that conforms to your body. This way, if you throw a cardigan or denim jacket over it for a casual weekend look, there is no bulk.

  • Throw On A Vest

    Fur vests (faux, of course) are stylish and pair well over a thin top. Warm without the bulk -- I love them!

  • Add Leather To Your Wardrobe

    Leather dresses and skirts are on-trend right now, and are the perfect clothing to stay warm in.

  • Pick The Perfect Peacoat

    Invest in a thigh length peacoat; it will keep you warm without a draft. For an even more dramatic fashion-forward look, try a calf-length coat.

  • Layer With Cardigans

    Thin, lightweight cardigan sweaters look great paired over leggings and jeans, and you can dress them up with a sweet brooch.

  • Repurpose Your Summer Wardrobe

    Wear your strapless summer dress over a fitted black turtleneck top -- a flawless way to extend your summer wardrobe and stay toasty.

  • Be Warm From Head To Toe

    Tall boots are fantastic in the winter for keeping your feet warm, especially since you can wear a thick pair of knee high socks.

  • Go Nude

    Wear a nude fitted camisole under your tops -- it won’t show and it will add a layer, without the bulk.

  • Keep Your Legs Warm

    Opt for thick opaque stockings; they are the perfect addition to a winter wardrobe, and perfect for the office.

  • Wear Lined Skirts

    Lined skirts won’t itch, are stylish and will keep you warm.