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William Mahoney Premium Dress Shirt


Say hello to our executive line, by William Mahoney. The premium cotton fabric is soft, light and has a hint of stretch for comfort. Plus it’s easy care- just machine wash cold and tumble dry low and it won’t shrink or wrinkle (remove promptly from dryer). You’re going to look and feel amazing in this shirt. Quick size guide (William Mahoney uses numbered sizing but correlates well with ours):

Height Weight (lbs.)
Small (2) 6’0″ – 6’4″ 140 – 170
Medium (3) 6’2″ – 6’6″ 170 – 200
Large (4) 6’4″ – 6’8″ 200 – 240
XL (5) 6’8″ – 7’0″ 240 – 280
Customer Reviews
4.7 Based on 6 Reviews
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algis m.
  • What is your height and weight? 6'4", 175 Lbs
  • Which size did you order? Medium
A Little Small Compared to TST, but still nice

Honestly, a little bit dissapointed by the William Mahoney shirt. It's not nearly as perfectly sized as the TST Dress Shirts (which I LOOOOVE) and the quality is fine, but I prefer the blend that TST uses in their TST-branded dress shirts. I know the William Mahoney shirt is all cotton, which some people value, but it's a little stiff, inelastic, and not as smooth as the TST blends. I really wish TST would offer some in-house dress shirts with patterns, would definitely buy several. Overall still pleased, but next time I would size up as a TST medium fits me PERFECT, but a William Mahoney Medium was too short and small. Still satisfied, but not the absolute perfection that the TST main line products are.

John S.
  • What is your height and weight? 6'1
  • Which size did you order? Small
William Mahoney Dress Shirts

Quick delivery These shirts are loved by my grandson ! Now he has all the fabrics that you offer.....will there be any new ones coming in the Spring?

Yvonne S.
  • What is your height and weight? My son is 6'3 and only 145 pounds
  • Which size did you order? Small
Beautiful shirt!

I just found this company and I love them! Both of my sons are tall and thin and have difficulty finding shirts with long enough sleeves- but not baggy. These shirts are perfect!

  • Which size did you order? Medium
  • What is your height and weight? 6'5" 190
Great fit!

TallSlim Tees is exactly what I needed. I'm 6' 5" on a good day and 190 lbs so finding a shirt off the rack is impossible for me. Then to have it tailored is not really a reality. This WM shirt fits great.

Dave C.
  • What is your height and weight? 6’5” 180lbs
  • Which size did you order? Medium
WM Dress Shirt

Wonderful fit and look! Stays tucked in for us tall guys, but not to long to wear out either. Love them!


The pure cotton fabric is soft, light and flexible so that it will drape well on a long, slender frame while giving you a nice, crisp look.

Product Details
100% cotton (pre-shrunk)
Machine wash cold. Tumble dry low. Promptly remove from dryer.


Please refer to this size chart for shirt dimensions and measurements. The length is measured from top to bottom. The chest is measured around the entire circumference of the chest. Sleeve is measured from center back of collar like dress shirts.

Length Chest Sleeve Neck
Small 30″ 39″ 36″ 15.5″
Medium 31″ 42″ 37″ 16″
Large 32″ 45″ 38″ 17″
XL 33″ 48″ 39″ 18″

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