Brand Comparison · 2026

    Peace CollectivevsOld Navy, Size Comparison

    Peace Collective tends to run smaller than Old Navy. If you wear a Medium at Old Navy, you may need a Large at Peace Collective. For a measurement-based recommendation, use the fit checker.

    Quick Answer

    Peace Collective vs Old Navy sizing, quick answer

    Peace Collective runs about one size smaller than Old Navy. If you wear a Medium at Old Navy, you'll likely need a Large at Peace Collective. For an exact recommendation, build a free fit profile.

    • Peace Collective: fits true to size
    • Old Navy: runs large
    • If between sizes: size up at the brand that runs smaller, or use the fit checker below for a personalised recommendation.

    Brand guide

    Compare how Peace Collective and Old Navy usually fit, where cuts feel slimmer or roomier, and which categories are 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.

    The Verdict

    Peace Collective sizing compared to Old Navy: Peace Collective fits true to size while Old Navy runs large. Here is how the sizes translate.

    Peace Collective tends to run smaller than Old Navy. If you wear a Medium at Old Navy, you may need a Large at Peace Collective. For a measurement-based recommendation, use the fit checker.

    Peace CollectiveTRUE TO SIZE
    Old NavyRUNS LARGE
    Peace Collective logo

    Peace Collective

    TRUE TO SIZE

    Canadian casualwear, mostly true to size with relaxed unisex fits

    Old Navy logo

    Old Navy

    RUNS LARGE

    Generous American sizing, runs large

    Category Match-up

    Peace Collective
    Old Navy
    Tops
    TRUE TO SIZE

    Most tops are true to size, but many unisex styles fit roomy by design.

    RUNS LARGE

    Generous, relaxed cuts. Runs large. Size down for a fitted look.

    Bottoms
    TRUE TO SIZE

    Casual bottoms are generally true to size with a relaxed feel.

    RUNS LARGE

    Jeans run large with a roomy seat. Rockstar jeans are the exception, those run slim.

    Outerwear
    TRUE TO SIZE

    Quarter-zips, hoodies, and layers are usually true to size with extra room through the torso.

    No data for Old Navy Outerwear

    Activewear

    No data for Peace Collective Activewear

    RUNS LARGE

    PowerSoft and Go-Dry leggings run large. Size down for compression.

    Size Conversion Table

    Your SizePeace CollectiveOld Navy
    XXSXXS<XXS(Runs Large)
    XSXSXXS(Runs Large)
    SSXS(Runs Large)
    MMS(Runs Large)
    LLM(Runs Large)
    XLXLL(Runs Large)
    XXLXXLXL(Runs Large)
    XXXLXXXLXXL(Runs Large)

    * Indicative only. For your personalised size at both brands,

    Common Questions

    Does Peace Collective run smaller than Old Navy?

    Peace Collective runs about one size smaller than Old Navy. If you wear a Medium at Old Navy, you'll likely need a Large at Peace Collective. For an exact recommendation, build a free fit profile.

    Should I size up or down at Peace Collective vs Old Navy?

    Size up one at Peace Collective compared to Old Navy. Peace Collective runs smaller, so if you wear a Medium at Old Navy, try a Large at Peace Collective, especially for fitted tops and tailored bottoms.

    If I'm a Medium at Peace Collective, what size am I at Old Navy?

    Since Peace Collective runs smaller than Old Navy, a Medium at Peace Collective is roughly equivalent to a Small at Old Navy. Use the ThisFits fit checker for a recommendation based on your measurements.

    Does Peace Collective or Old Navy fit differently by category?

    Yes, fit varies meaningfully by category. Tops, Bottoms can each fit differently than the brand's overall tendency suggests. See the Category Match-up section below for per-category guidance.

    Which brand is more accurate to its size chart, Peace Collective or Old Navy?

    Peace Collective and Old Navy both publish official size charts, but real-world fit varies by fabric, cut and category. The ThisFits engine cross-references published charts with shopper fit reports across 197+ brands to predict your size in each.

    What if I'm between sizes at Peace Collective and Old Navy?

    If you're between sizes, Peace Collective tends to fit closer to the body, so trying the larger size first usually means fewer returns. Always confirm each retailer's return policy before ordering.

    More Comparisons

    Your Personal Size

    See your size in Peace Collective&Old Navy

    Build your fit profile once and see your likely size for Peace Collective and Old Navy, based on your measurements.

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