Collection: Plus Size Dresses

In the general fashion retail context, “plus-size dresses” refers to dresses designed for women whose body measurements fall outside what brands traditionally call “straight sizes.” These dresses, generally starting at size 12 and going up to size 30 and beyond, are cut and constructed to better flatter curves, fuller busts, hips, thighs, and different body proportions. At Curve Theory, our plus-size dresses are thoughtfully curated with those proportions in mind—so you feel as good as you look.

Yes! Curve Theory is a Canadian retailer, and we offer a full range of plus-size dresses in Canada through our website, curvetheory.ca, and in-store at our boutique in Mississauga, Ontario. We also ship across Canada and the USA so you can shop confidently for plus-size dresses from wherever you are in North America.

Our plus-size dresses collection typically spans sizes 12 (or XL) through 22 (or 3X), and occasionally up to size 24/26 (4X) depending on the style. We provide one general size chart that applies across our collection, which makes our sizing consistent. For extra peace of mind, you can also take advantage of our complimentary concierge styling. Whether shopping in-store or online, we’re happy to measure a particular style for you and compare it against your own measurements to recommend the best size.

• To choose the right size for your plus-size dress:
• Bust: Measure around the fullest part of your bust, keeping the tape level.
• Waist: Measure around your natural waistline (bend to one side to find the crease).
• Hips: Measure about 20 cm (or 8 inches) below your waistline, around the fullest part of your hips.

Use these numbers against our size chart for the best match. If you fall between sizes, we generally recommend sizing up for comfort—especially in more fitted styles.

Sizing can be frustrating because “16W” or “2X” doesn’t always mean the same thing across plus size clothing companies and brands. Each brand uses its own fit model and grading process, and variations are often even more noticeable in plus-size clothing. That means one brand’s 18 can feel completely different from another’s 18. At Curve Theory, our sizing is consistent across our entire collection.

• Here are some timeless go-to options:
• A-line or fit-and-flare dresses: Skirts that flow gently from the waist flatter many body shapes.
• Wrap or faux-wrap dresses: The diagonal line highlights your bust-to-waist ratio.
• Empire waist dresses: The raised waistline elongates the body and is comfy around the midsection.
• Shift or sheath dresses in structured fabrics: Adds polish without clinging.
• Midi length: Often the sweet spot of chic and practical.

Choosing plus-size dresses with quality fabric, good proportions, and a touch of structure helps you feel confident and comfortable at any age.

Look for fabrics that balance structure with comfort:
•   Medium-weight knits (like ponte) hold their shape without clinging.
•   Woven fabrics with a bit of stretch (elastane/spandex) give freedom to move.
•   Thicker fabrics offer support, while ultra-thin or sheer fabrics can cling in ways you may not want.

Necklines really set the mood of a dress:
•    V-neck or plunge: Elongates and draws attention to your face.
•    Scoop or round: Classic and easy to wear if you prefer more coverage.
•    Square: Adds structure and balance, especially flattering on fuller busts.
•    Off-shoulder or bateau: Romantic and elegant—just make sure it feels secure so you can move comfortably.

When trying plus-size dresses, notice how the neckline lies—no gaping or pulling is key.

It depends on your height, shape, and the occasion:
•    Knee-length: Versatile, office-ready, and universally flattering.
•    Midi: Sophisticated, works well with heels or flats.
•    Maxi: Great for formal occasions or statement looks, especially in one-color or flowing prints.

Absolutely! Bold prints and vibrant colours can look stunning on plus-size dresses. The trick is to find the right balance:
•    Larger prints work beautifully when the pattern repeat feels proportionate.
•    Vertical or diagonal stripes help elongate.
•    Solid jewel tones—think emerald, sapphire, or burgundy—are timeless and striking.
At Curve Theory, you’ll find both bold patterns and versatile neutrals—so you can wear whatever makes you feel radiant.

Yes - when dressing up for a wedding, gala, or special night:
•    Check fabric drape: formal fabrics like satin or taffeta often have less stretch.
•    Consider support: bodices, straps, or built-in structure can help.
•    Opt for elongating lines: monochromatic colors, subtle embellishments, and defined waists flatter beautifully.
•    Always try it on ahead of time so there’s room for tailoring if needed.

•    Always check the care label first.
•    Hand wash or gentle cycle in cold; hang or lay flat to dry.
•    Avoid high-heat dryers.
•    Steam or iron lightly with protection cloth.
•    Store properly—heavier fabrics on padded hangers, lighter dresses in breathable bags.

We want you to love your Curve Theory purchase. If it doesn’t fit:
•    Check our return/exchange policy on our site and act within the timeframe.
•    If it’s almost perfect, consider minor tailoring.
•    And remember—our complimentary concierge styling can help guide you to the right size next time.

•    Start with the right undergarments.
•    Move around—sit, walk, raise your arms—to test the fit.
•    Watch for straps or seams that dig.
•    Keep your accessories balanced so you feel good from head to toe.

Work: Go structured in neutral or bold jewel tones, with a blazer and polished shoes.

Weekend: Softer fabrics, playful prints, denim jackets, sneakers or wedges.

Evening: Richer colours, metallic accents, or prints like leopard—plus statement jewellery and maybe a bodycon moment if you’re feeling daring.

Yes! A few tips:

• Apple shape: Empire waist, V-neck, A-line.
• Pear shape: Emphasize your top with details, and let skirts skim, not cling.
• Hourglass: Wrap, belted, fit-and-flare, or bodycon to highlight your waist.

Our product descriptions often note which body types each style flatters.

We update our plus-size dresses weekly with new seasonal arrivals, trending colours, fresh prints, and staple basics. To stay ahead, check our “Coming Soon” page on curvetheory.ca—it’s updated weekly with styles arriving in the next week or two, so you’ll know what’s on the way. You can also sign up for our newsletter so you don’t miss new arrivals or limited-edition plus-size dresses in Canada and special, exclusive offers.

• Measure yourself (see Q4).
• Compare with our size chart and any fit notes.
• If between sizes, size up for dresses without stretch.
• Reach out with your measurements—we’re happy to recommend a size.
• And remember, if it’s not right, our exchange policy has you covered.

Yes! Many of our plus-size dresses are made from poly-spandex blends, which naturally resist wrinkles. If you fold or roll them neatly in your luggage, then hang them when you arrive, they should come out looking smooth with little to no wrinkling. These fabrics are perfect for travel, conferences, or vacations when you want your dress to look polished without extra fuss.

Not at Curve Theory. While plus-size fashion once came with a higher price tag, we’re committed to offering great value across all sizes. Price depends more on fabric, design, and details than size.

We understand that fit is everything. Eligible regular-priced plus-size dresses can be returned or exchanged within our policy window, as long as the dress is unworn, unaltered, and in its original condition. Details (like shipping or fees) are outlined on our Returns page.

Spring/Summer: Breathable fabrics, lightweight knits, store cool and dry.

Fall/Winter: Heavier fabrics, padded hangers, and garment bags to preserve shape.

Good care keeps your investment pieces fresh season after season.

Absolutely. We carry dresses perfect for weddings, parties, and special events—think lace overlays, chiffon, satin, or beading. Since formal fabrics often have less stretch, consider sizing up or styles with adjustable features (like wraps or smocking).

• Focus on how the dress fits you, not just the number on the tag.
• Measure yourself, compare to our general size chart, and keep track of what sizes work best for you.
• Try styles you love—don’t shy away from colour or prints just because you’re plus-size.
• Choose fabrics and cuts that let you move comfortably.
• Invest in good undergarments—fit makes a huge difference.
• And above all—confidence is the best accessory you’ll ever wear with a plus-size dress.

Tip: Take advantage of our complimentary concierge styling. If you’re local to our Mississauga boutique (or can make a special trip), we’ll help you find the right size, style, and accessories to complete your look. Shopping online? We can guide you the same way by phone—always free of charge.