Does St. John run small?
St. John runs small. Most shoppers size up from their usual size, especially in tops. St. John runs small with a fitted luxury knit construction. Size up one. Check the category notes below for tops, bottoms, and outerwear specifically.
St. John generally runs small.
St. John runs small with a fitted luxury knit construction. Size up one.
Confidence: Medium, based on official size chart data
Sizing overview
Most shoppers start one size up. Use the notes below to see where St. John feels slimmer, roomier, or more consistent across categories.
St. John runs small. Runs small. Fitted luxury knit, size up one.
Plain-language cut notes and examples below show where pieces usually feel closer, roomier, or most predictable.
GENERAL BRAND GUIDANCE
This is a general brand-level sizing summary, not an exact product recommendation. For your specific size, paste a product link into the fit checker.
St. John runs small. St. John runs small with a fitted luxury knit construction. Size up one.
How to read St. John sizing
Sizing tendency
Most shoppers start one size up.
Consistency
Low variation across categories.
Best check
Start with the category note, then check whether the cut is meant to feel structured or relaxed.
Variability and caveats
When St. John can feel different from the usual sizing tendency
Cut
Structured pieces usually feel smaller first, especially through the shoulders, waist, or hip.
Fabric stretch
Stretchy or knit fabrics can make the brand feel more forgiving than its usual size reputation.
Styling
This brand is fairly consistent, but styling can still shift the feel when a piece is meant to be sharply fitted or deliberately oversized.
St. John Sizing by Category
Runs small. Fitted luxury knit, size up one.
What to expect
Expect tops to feel closer than the label suggests, especially in more structured pieces.
Runs small. Fitted knit proportions.
What to expect
Expect bottoms to feel closer than the label suggests, especially in more structured pieces.
Runs small. Fitted luxury knit, size up one.
What to expect
Expect dresses to feel closer than the label suggests, especially in more structured pieces.
Compare Brands
Common questions about St. John sizing
Does St. John run small?
St. John runs small. St. John runs small with a fitted luxury knit construction. Size up one. Most shoppers start one size up.
What size am I in St. John if I wear a Medium?
If you wear a Medium in standard contemporary sizing, plan to try a Large at St. John first, especially in structured or fitted pieces. Fit can vary across tops, bottoms, and dresses, so confirm against the specific category you are shopping.
Does St. John fit differently by category?
Yes. Fit varies by category at St. John, covering tops, bottoms, and dresses, since the same brand often cuts tops and dresses to different proportions.
Is St. John's size chart accurate?
St. John publishes an official size chart, and ThisFits cross-references it against real shopper fit reports. St. John shows low variation across categories, so the chart is a reliable starting point with adjustments based on cut.
What if I'm between sizes at St. John?
Since St. John tends to run small, sizing up usually means fewer returns when you are between sizes, especially for fitted tops and tailored bottoms.
How does St. John sizing compare to other brands?
St. John sizes similarly to Zara and COS, many customers prefer the next size up. Shoppers commonly compare St. John against other contemporary labels in the same category to translate sizes between brands they already wear.
Can I return St. John items if the size is wrong?
St. John typically accepts returns on unworn items with tags within the window stated on the order page or receipt. Policies vary by retailer and third-party sellers may differ, so confirm before ordering.