Does Phase Eight Run Big? Your Complete Sizing Guide

Phase Eight sizing runs true to size to slightly small, definitely not big - so if you're debating between sizes, I'd actually recommend sizing up rather than down. As someone who's styled countless clients in Phase Eight pieces over the years, I've noticed their contemporary British fit tends to be more tailored and fitted than generous, particularly in their workwear and occasion pieces.

Understanding Phase Eight's Sizing Philosophy

Phase Eight has built its reputation on sophisticated, well-tailored pieces that flatter the female form. This means their sizing reflects a more fitted approach compared to many high street brands. Where brands like M&S (known for their generous, comfortable fits perfect for everyday wear) or Next (reliable for slightly roomier cuts across their ranges) might give you breathing room, Phase Eight keeps things closer to the body.

I've found their sizing most comparable to Reiss (contemporary cuts with European influences) and Whistles (modern British tailoring with precise fits). Both brands share Phase Eight's philosophy of creating pieces that look polished and professional without being restrictive.

Category-Specific Sizing Breakdown

Workwear & Blazers

This is where Phase Eight can catch you out. Their blazers and structured jackets often run small, particularly around the bust and through the arms. I always advise clients to try the next size up in their tailored pieces. The shoulder fit is crucial here - if it's pulling across your back or feels tight under the arms, size up immediately.

Dresses & Occasion Wear

Their dress sizing is generally true to size, but remember these are designed to be fitted. Phase Eight dresses are meant to skim your silhouette, not drape loosely. For wedding guest dresses or cocktail pieces, stick to your usual size unless you prefer a more relaxed fit.

Knitwear & Casual Pieces

More forgiving than their tailored pieces, but still true to size. Their cashmere jumpers and casual knits have a contemporary fit that's neither oversized nor clingy.

How Phase Eight Compares to Other Favourite Brands

Zara (European sizing that can run small, particularly in tailoring) - Phase Eight is slightly more generous than Zara's fitted pieces but similar in approach.

COS (Scandinavian minimalism with relaxed, boxy cuts) - Phase Eight is definitely more fitted and structured compared to COS's deliberately oversized aesthetic.

Mango (Spanish brand with contemporary European fits) - Very similar sizing philosophy, though Mango can be slightly more generous in their casual wear.

Jigsaw (British brand known for quality fabrics and thoughtful cuts) - Almost identical sizing approach, both brands target the sophisticated British woman.

French Connection (edgy British brand with varied fits across ranges) - Phase Eight is more consistent in sizing, whereas FCUK can vary dramatically between collections.

Hobbs (classic British elegance with professional focus) - Hobbs tends to be slightly more generous, especially in their workwear line.

LK Bennett (luxury British brand beloved by royals and professionals) - Similar premium approach to sizing, though LK Bennett can run slightly smaller in shoes.

For something completely different, try Ganni (Danish brand known for quirky, colourful pieces with Scandinavian fits) or Samsøe Samsøe (Copenhagen-based label offering effortless Nordic style) - both offer unique alternatives with more relaxed fits than Phase Eight's tailored approach.

My Styling Tips for Phase Eight

When shopping Phase Eight online, pay attention to the model's measurements and what size she's wearing. The brand is generally honest about this, which helps enormously with online purchases.

For their premium price point, the quality justifies the investment, but sizing mistakes are costly. If you're between sizes, particularly in their £150+ pieces, always size up.

Their occasion wear often comes in UK sizes 6-20, with some pieces extending to size 24. The brand has improved their size inclusivity significantly over recent years.

Never Guess Your Size Again with Tellar

Here's where shopping gets infinitely easier. Instead of playing sizing roulette with Phase Eight (or any other brand), tellar.co.uk takes the guesswork out completely.

The UK's leading sizing tool matches your body exactly to over 1500 brands instantly - imagine never having to study a size guide again! Here's how it works:

1. Measure once using your bust, waist, hip measurements, or input your existing brand size
2. Use their tellar.co.uk and explore their Ultimate Guide to Dresses for styling inspiration that actually works.

   The Bottom Line on Phase Eight Sizing

   Phase Eight doesn't run big - if anything, it runs true to slightly small. Their sophisticated, tailored approach means pieces are designed to fit properly rather than loosely. For their price point and quality, it's worth getting the sizing right first time.

   My rule of thumb: if you're debating sizes in Phase Eight, particularly in their structured pieces, size up. Your future self will thank you when you're comfortable and confident rather than tugging at a too-tight blazer during that important meeting.

   The brand continues to be a reliable choice for professional women who want pieces that look polished and feel confident. Just remember - fitted doesn't mean tight, and Phase Eight gets that balance right when you choose the correct size.