This Week in Fashion rounds up the week's style news, store openings and closings, pop-up shops, sales and upcoming fashion and design events in Toronto. Find it here every Wednesday morning.

EVENTS/PARTIES

Headmistress, a local brand offering headdresses ranging from floral crowns to feather headbands, is kicking off their first ever pop-up shop tonight (December 12) from 7 pm until 11 pm. Make your way over to the Norman Felix Gallery (627 Queen St W) for a drink, a treat, a visit from Santa, and 10% off all of the accessories you'd need to stand out in a crowd. Plus, spend $50 or more and get a surprise gift - the Holidays have arrived! RSVP to RSVP@loveheadmistress.com for the launch party, and if you can't make it, they'll be open until Sunday (December 16).

Mavrik Wine Bar (676 Queen St W) is turning into a festive venue for the Holiday edition of the Mavrik Mrkt this Saturday (December 15). Spend the day perusing everything select local vendors have to offer, including Off Cut Studio, Knead Bakery, Touch the Dutch Jewellery, so get your homemade treats, crafts, and gifts while they're all in one place.

Chaos Theory, a local brand offering simple, versatile, and somewhat urban menswear, is throwing a pop-up shop at Proper Reserve (498 Queen St W) on Saturday (December 15). They'll be offering a sweet in-store discount from noon until 7 pm on their fall/winter 2012 collection.

Celebrate the holidays in style with Bridge & Bardot (1138 Dundas St W) this Saturday (December 15) from 6 pm until 10 pm. Peruse their new collection of hand-picked and reworked vintage clothing - including weather-appropriate sweaters and dazzling New Year's dresses - over complimentary champagne, cupcakes, and good company.

SALES

Jeremy Laing, Arielle de Pinto, Calla, and Rita Leifhebber are once again having their year-end sample sale for one day only - this Saturday (December 15). Head down to Jeremy Laing's studio located 207A Cowan Avenue from noon until 6 pm to get your unconventionally-designed clothing and accessory fix.

Caitlin Power, Calgary's budding new womenswear designer, is throwing a flash sale with M.W.L boasting up to 60% off on funky tailored clothing and endearing jewellery. Visit The Burroughes Building (639 Queen St W) from 11 am until 7 pm on Saturday (December 15) to score a deal!

Visit The Mascot (1267 Queen St W) this weekend (December 15 - 16) for CREEP's fall/winter 2011 sample sale. The bold urban menswear, heavily influenced by Japanese fashion, will be marked at 60% to 70% off the retail prices.

Consign Toronto is hosting its first ever pop-up shop at The Black Box Boutique (106 Yorkville Ave, 2nd floor) - the perfect exquisite and intimate location for such an event. Premium denim - including J Brand and 7 For All Mankind - will be sold at $30. Tops, shoes, and bags by Gucci, Prada, Louis Vuitton, and more, will also be available at discounted prices, so be sure to stop by at some point this weekend (December 15 - 16)!