5 Mistakes Men Make When Buying Shirts Online (and How to Avoid Them)

By AlphaBestStores Team · Reviewed by our men’s fashion editor · Updated August 2026

Buying a shirt online seems simple until the package arrives. Then you discover that the collar feels too tight, the sleeves are too long, or the cut does not flatter your body.

The problem is not always the shirt. Many returns happen because we choose based only on the photo, the brand, or the size we usually wear.

Before your next purchase, review these five common mistakes. Avoiding them can help you find a shirt that looks good, feels comfortable, and truly deserves a place in your wardrobe.

1. Choosing a Size Without Checking the Measurements

Wearing a size M, L, or XL in one brand does not mean that the same size will have identical measurements in another. Chest width, collar size, and sleeve length can vary considerably.

Before buying, take a shirt that already fits you well and measure:

• Chest width.
• Shoulder width.
• Sleeve length.
• Collar circumference.
• Total shirt length.

Then compare those measurements with the product’s size chart. This step only takes a few minutes and can help prevent a return.

Calvin Klein Slim Fit Non-Iron Shirt

This shirt can be a good option for men who want a clean appearance and a closer fit to the body. However, it is important to check the measurements before choosing it, especially if you need more room in the chest or midsection.

View Calvin Klein Slim Fit Shirt on Amazon

2. Confusing Slim Fit, Classic Fit and Big & Tall

Two shirts in the same size can fit completely differently when they are made in different cuts.

• Slim Fit: fits closer to the chest, waist, and arms.
• Regular Fit: offers a balanced silhouette and more freedom of movement.
• Classic Fit: usually provides more room through the torso and a more traditional cut.
• Big & Tall: designed for larger or taller men, or those who need different proportions.

Do not choose Slim Fit simply because it looks more modern. The best shirt is the one that follows the shape of your body without feeling tight or leaving too much extra fabric.

Calvin Klein Big & Tall

A shirt specifically designed for larger or taller body types can provide better mobility, more appropriate length, and a more natural drape than simply buying a larger standard size.

View Calvin Klein Big & Tall Shirt on Amazon

3. Buying a Color That Does Not Work With What You Already Own

A shirt may look attractive in the product photo and still end up forgotten in your closet because it does not match any of your pants or shoes.

Before choosing a color, think of three pieces you already own that you could wear with that shirt. If you cannot come up with three possible combinations, it may not be the most practical purchase.

For a strong starting point, white, light blue, navy, and gray usually pair easily with jeans, chinos, and dress pants.

Polo Ralph Lauren Oxford Shirt

An Oxford shirt in a classic color can work for a family gathering, dinner, weekend outing, or smart casual occasion.

View Polo Ralph Lauren Oxford Shirt on Amazon

4. Ignoring Fabric, Wrinkles and Climate

A product photo does not always reveal how a shirt will feel after several hours of wear. That is why it is important to read the fabric description and care instructions.

In Florida, Texas, and other warm states, a shirt that is too heavy can become uncomfortable. In cooler climates, a long-sleeve shirt can work on its own or as part of a layered outfit.

You should also consider your routine. If you work long hours, drive frequently, or do not want to iron constantly, look for easy-care or wrinkle-resistant materials.

Tommy Hilfiger Short-Sleeve Poplin Shirt

Short sleeves are practical in warm states and for men who need something more polished than a T-shirt without giving up comfort.

View Tommy Hilfiger Short-Sleeve Shirt on Amazon

5. Buying for the Brand Without Thinking About When You Will Wear the Shirt

A well-known brand can inspire confidence, but it does not guarantee that the shirt will meet your actual needs. Before buying, ask yourself where and how often you will wear it.

• Do you need it for work?
• Will you wear it to family gatherings?
• Do you want to pair it with jeans?
• Will you wear it open over a T-shirt?
• Is it appropriate for the climate where you live?

The best purchase is not always the cheapest or the most expensive shirt. It is the one you can wear frequently and combine with several pieces you already own.

Polo Ralph Lauren Solid-Color Shirt

A solid-color shirt can work for weekends, family gatherings, and fall outfits. It can also be worn open over a plain T-shirt for a relaxed look.

View Polo Ralph Lauren Solid-Color Shirt on Amazon

How We Chose These Shirts

For this guide, we prioritized shirts from brands known for consistent sizing, including Calvin Klein, Tommy Hilfiger, and Polo Ralph Lauren. We included different cuts — Slim, Regular, Classic, and Big & Tall — so men with different body types can find an appropriate option. We also considered versatility: each shirt should work with more than one type of pants and be useful for more than one occasion, including work, casual outings, and warm-weather wear.

The Final Check Before You Buy

Before clicking the purchase button, check these five points:

1. You compared your measurements with the product size chart.
2. You selected the right fit for your body.
3. The shirt works with several pieces you already own.
4. The fabric and sleeve length suit your climate and routine.
5. You reviewed the return policy and recent customer feedback.

A thoughtful purchase can save you money, time, and the frustration of receiving a shirt you will never actually wear.

Find the Right Type of Shirt for You

If you are still unsure what to choose, visit our guide to shirts commonly worn by Hispanic men in the United States. You will find options for work, going out, spending time with family, and dressing well in warmer states.

Discover 5 Essential Shirts for Hispanic Men in the United States

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Frequently Asked Questions

How do I know my shirt size when buying online?

Measure a shirt that already fits you well and compare the chest, shoulders, sleeves, collar, and overall length with the specific product size chart.

What is the difference between Slim Fit and Classic Fit?

Slim Fit sits closer to the body, especially through the torso and arms. Classic Fit usually provides more room and a more traditional silhouette.

Should I buy a larger size if I carry more weight around my stomach?

Not necessarily. A larger size may also make the shoulders and sleeves too big. It may be better to look for a Regular, Classic, or Big & Tall cut with more appropriate proportions.

What shirt color works with the most pants?

White and light blue are two of the most versatile options. They pair easily with black, gray, beige, navy pants, and dark jeans.

What type of shirt is best for hot weather?

Look for lightweight, breathable fabrics, preferably in lighter colors. A short-sleeve shirt can be practical for casual activities or very hot days.

What should I look for in customer reviews?

Look for comments about sizing, shrinkage, fabric transparency, sleeve length, and how the shirt performs after washing.

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