At MellowDiamond, our mission is to help you crown yourself with confidence—starting with the perfect wig fit. Whether you’re rocking a ready-to-ship or a custom-made human hair wig, getting the right cap size is crucial for comfort, security, and a natural look.

Our detailed cap size guide ensures that every wig we craft hugs your head perfectly, without tightness, slippage, or discomfort. In this article, we’ll break down exactly how to measure, understand your cap size, and choose between Small (S), Medium (M), and Large (L)—all backed by the visual size chart we use to custom-fit every unit.

Why Cap Size Matters

The perfect wig is more than just stunning hair—it’s a secure, seamless fit. A poorly fitting wig can:

Cause tension on your edges or scalp
Shift or slide throughout the day
Create unnatural bulging or gapping
Feel uncomfortable during long wear

That’s why at MellowDiamond, we encourage accurate measurements before placing your order, especially if you're selecting from our Made-to-Order Custom Collection.

The 6 Essential Wig Measurements Explained

To determine your ideal cap size, you’ll need to take six measurements using a flexible measuring tape. Here’s how to do it correctly, based on the diagram in our image:

1. Circumference

Where to measure: Around your head, starting at your hairline, going behind your ears, and down to the nape of your neck.
Why it matters: This determines the overall size and tightness of your wig cap.

2. Forehead to Nape

Where to measure: From your front hairline, over the top of your head, down to the nape of your neck.
Why it matters: Ensures your wig lays flat without bunching or sliding up.

3. Ear to Ear Across Forehead

Where to measure: From the top of one ear to the other, across your forehead.
Why it matters: Helps the lace front sit comfortably and naturally across the front of your head.

4. Ear to Ear Over the Top

Where to measure: From the top of one ear, over the crown of your head, to the top of the other ear.
Why it matters: Supports correct placement of the lace and overall balance of the wig.

5. Temple to Temple Round Back

Where to measure: From one temple, around the back of your head, to the other temple.
Why it matters: Affects how well the wig wraps and fits securely around your head.

6. Nape of Neck

Where to measure: The width of the back of your neck.
Why it matters: Ensures the back of the wig lays smoothly and securely at the nape.

Cap Size Chart – Find Your Perfect Fit

Here’s a breakdown of the standard sizing used at MellowDiamond:

Measurement	Small (S)	Medium (M)	Large (L)
Circumference	21.5 in	22.5 in	23.5 in
Forehead to Nape	13.5 in	14.5 in	15.5 in
Ear to Ear (front)	11 in	11.5 in	12 in
Ear to Ear (top)	12 in	12.5 in	13.5 in
Temple to Temple	14.5 in	15.5 in	16.5 in
Nape of Neck	4.5 in	5.5 in	6 in

💡 Pro Tip: If your measurements fall between sizes, size up for comfort or leave notes during your order for custom adjustments. We can accommodate XS and XL sizes upon request.

How to Measure Correctly – Step-by-Step

All you need is:

A flexible tape measure
A mirror
Clean, flat hair or a wig cap
A notepad or phone to record numbers

Step-by-Step Tips:

Start with clean, flat hair – Braids or a wig cap can help flatten the surface for accurate measurement.
Use the mirror to see the back of your head.
Take your time—measuring twice is better than reordering!
Ask for help if needed—some measurements are easier with an extra pair of hands.

When to Add Notes to Your Order

If your measurements don’t fall into our standard S/M/L categories or you have a unique head shape, we recommend:

Choosing the closest cap size
Leaving your exact measurements in the order notes section
Or contacting us for custom cap construction

At MellowDiamond, we’re happy to accommodate XS and XL sizes with precision.

Wigs That Fit Just Right – What to Expect

A correctly fitted wig should:

Sit snug without slipping
Require minimal adhesive (especially for glueless wigs)
Follow the natural curve of your head
Eliminate tension or bulging at the lace or nape

When your wig fits like a glove, it not only looks better—it feels better too.

Conclusion

Choosing the right wig size is the foundation of every great install. At MellowDiamond, we make it easy by offering a precise sizing system that accommodates every queen’s crown. Whether you're buying a ready-to-ship unit or customizing a luxurious made-to-order style, knowing your correct measurements means you’ll enjoy flawless fit, long-lasting comfort, and natural confidence every single time.

FAQs

1. What if I’m between sizes?

We recommend sizing up and using the adjustable strap for a secure fit. You can also leave your exact measurements in the order notes for customization.

2. Can I get a wig made in XS or XL size?

Yes! Just provide your full measurements in your order notes, and we’ll craft a custom cap to fit you perfectly.

3. Do all MellowDiamond wigs come with adjustable straps?

Yes, all our wigs include built-in combs and adjustable elastic bands for added flexibility and comfort.

4. Is it possible to reshape a wig if it doesn't fit?

Minor adjustments can be made using straps or by visiting a professional stylist, but for the best experience, always use accurate measurements from the start.

5. What tools do I need to measure my head?

Just a soft measuring tape, a mirror, and a few minutes of your time!

How to Choose the Right Wig Cap Size – Fit Guide by MellowDiamond