Finding Your Wig Size

Snug but not tight: snug like a fitted hat, not a headband. The ear tabs should sit flat just in front of your ears. The front hairline should sit where your natural hairline is. The nape should feel anchored, not loose or gapping. You shouldn't feel pressure at the temples or forehead after a few hours of wear.

Most caps have velcro or hook-and-eye straps at the nape that give up to half an inch of adjustment. Try these first. They resolve most minor fit issues in under a minute. If the straps are already maxed out in either direction, then it's time for one of the options below.

New wigs are always snugger than they'll eventually feel. The cap hasn't broken in yet. If yours feels slightly tight straight out of the box, place it on a canvas wig head (not foam; canvas holds the shape better) overnight. The cap gradually expands to a more natural fit without any sewing. Give it a day before deciding it's the wrong size.

The most common DIY alteration. Works well on wefted caps. Put the wig on and pinch the excess fabric at the nape until it fits the way you want. Mark both sides of the pinch, take the wig off, turn it inside out, and sew along the pinch marks. The stitched fold reduces circumference by the amount you pinched. This is reversible: snip the thread if you want to undo it.

Note: Only alter wefted caps this way. Do not sew through hand-tied areas. The knots are delicate and won't recover. If you're unsure, have a professional wig stylist do it.

Good for caps that feel loose across the top rather than just at the nape. Measure the distance from one ear tab to the other inside the cap. Cut a piece of elastic 2–3 inches shorter than that measurement. The shorter length creates the tension. Turn the wig inside out and sew the elastic horizontally across the interior, from one ear tab to the other, just above the existing band. The elastic pulls the cap inward evenly rather than just cinching the back.

A velvet band worn under the wig. It creates friction between your scalp and the cap. It's useful for smooth or bare scalps where the wig has nothing to grip. It also creates a small shelf at the nape that can help anchor the cap if you have a flatter occipital bone. Adds a small amount of bulk underneath, so if you're already at the upper edge of your size, measure with the grip on before buying your next wig.

Any hand-tied wig, regardless of brand, will have significantly more stretch and give than a wefted cap in the same size. The mesh construction conforms to your head rather than holding a fixed shape. If you're between sizes, have a flatter head shape, or find wefted caps consistently restrictive, look for hand-tied construction first. It's the most reliable way to get a cap that truly fits the shape of your head rather than fighting it.

Ellen Wille is a German brand sized to a European standard, which runs smaller than American average. Their default size is Petite/Average — designed for heads that American brands would call standard Average. If you measure as Average and an Ellen Wille style feels snug, that's why. Try their Average/Large, or look for styles with "Large" in the name. Exception: the Modixx, Changes, and Perucci collections within Ellen Wille fit true average.

Amore was designed specifically for women with partial or total hair loss, so their caps tend to be cut snugger for a bare scalp. Noriko and Rene of Paris also appear to run on the smaller side, though individual styles vary. If you're at the upper end of Average, these brands are worth keeping in mind. Always use your measurement as your guide.

Head circumference shifts with body weight, just like ring and shoe size. If your weight has changed significantly, measure again before ordering.

Without hair underneath, your head may measure smaller than it did before. If you ordered a wig before hair loss began and it now feels loose, this may be why. Measure with your hair in the state it will actually be in when you wear the wig.

As hair grows back in, your effective head size increases. A wig that fit perfectly during treatment may feel snug a few months into regrowth. That's a good sign. Time to remeasure.

Wigs loosen with months of wear. A new wig in the same labeled size will feel noticeably snugger than one you've been wearing for a year. That's normal. It will break in. Don't size up just because a new wig feels different from a worn one.

Just like rings get tight in summer and shoes feel snugger at the end of a long day, your head can swell slightly in heat. If a wig feels fine in the morning but tight by afternoon, heat is likely the reason, not the size.

Chemo can temporarily make the scalp sensitive or tingly, sometimes for just a few days. If a wig that fit well yesterday feels uncomfortable today, give it a few days before drawing conclusions. On sensitive days, a hand-tied cap is the softest option. A soft wig liner underneath a wefted cap can also help.

A wig cap liner, wig grip band, or significant bio hair all add measurable bulk under your wig. If you plan to wear any of these regularly, measure with them in place. A wig grip band in particular can turn a comfortable fit into a tight one.