US clothing sizes show up in a few common formats across categories.

• Letter sizes: XS, S, M, L, XL and extended sizes (like 2XL and up).
• Number sizes: Used in many women’s and juniors items (for example, 4, 8, 12), and some men’s categories.
• Measurement based: Many men’s pants use waist by inseam (for example, 34 x 32). Bras use band numbers with cup letters.
• Specialty fits: Plus, petite, juniors, and big & tall often have different proportions and lengths.

Because sizing can vary by brand and style, it’s a good idea to compare your measurements with the size chart on the product page when available, and review fit notes in the item details.

A quick measure-and-compare approach can help you choose confidently.

1. Measure key areas: For tops and dresses, measure bust or chest, waist, and hips. For pants, measure waist and inseam. Use a soft tape and keep it level.
2. Compare to the item’s size chart: On the product page, look for a size chart and match your measurements to the closest size.
3. Check fabric and fit notes: Stretchy knits, structured wovens, and relaxed vs. fitted cuts can affect how a size feels.
4. Read reviews when available: Shoppers often share if an item feels snug or roomy.

If you’re between sizes, consider the look you want (more fitted or more relaxed) and the garment’s material.

Size numbers are simply labels that vary by brand and fit. A US 14 in one style may not match measurements in another, especially across missy, juniors, or plus collections.

• Start with measurements: Compare your bust, waist, and hips to the size chart on the item page when available.
• Consider the cut: Different silhouettes and fabrics can change how a size feels.
• Use fit notes and reviews: They can provide additional context on ease or snugness.

Focusing on measurements and desired fit typically leads to a better outcome than relying on the number alone.

It depends on the category and the brand’s sizing system.

• Men’s apparel: A 38 may indicate an inch-based measurement (for example, pants waist or suit jacket chest).
• Bras: A 38 can refer to a band size paired with a cup letter.
• Women’s international sizing: Some items list an EU 38 alongside a US size.

To know for sure, check the product page’s size selector and size chart when available. Items that mention US, UK, or EU sizing often include a conversion table. Matching your body measurements to the chart is the most reliable way to find the corresponding US size.

Many product pages include a size chart to help you choose.

• Near the size selector: Look for a size chart link or icon before adding to cart.
• In item details: Some charts appear in the product description or specifications.
• Seller-provided info: For marketplace items, size guidance may be included by the seller.

If you don’t see a chart, check the item’s measurements if provided, review fit notes, and read customer feedback. You can also filter by plus, petite, juniors, or big and tall categories to find proportions that match your needs. Comparing your measurements to any available chart is the most consistent approach.