Some brands may vary from these measurements but you can still use them as a guide.
SIZESXXSXSSMLXLXXL3XL4XL
UK46810121416182022242628303234
EUR32343638404244464850525456586062
Chest cm74-7878-8282-8686-9090-9494-9898-102102-107107-113113-119119-125125-131131-137137-143143-149149-155
Chest inch29-30¾30¾-32¼32¼-33¾33¾-35½33¾-35½37-38½38½-4040-4242-44½44½-46¾46¾-49¼49¼-51½51½-5454-56¼56¼-58½58½-61
Waist cm58-6262-6666-7070-7474-7878-82.582.5-87.587.5-9393-9999-105105-111111-117.5117.5-124.5124.5-131.5131.5-138.5138.5-145.5
Waist inch22¾-24½24½-2626-27½27½-2929-30¾30¾-32½32½-34½34½-36½36½-3939-41¼41¼-43¾43¾-46¼46¼-4949-51¾51¾-54½54½-57¼
Low hip cm79-8383-8787-9191-94.594.5-97.597.5-100.5100.5-103.5103.5-107.5107.5-112.5112.5-117.5117.5-122.5122.5-128128-134134-140140-146146-152
Low hip inch31-32¾32¾-34¼34¼-35¾35¾-37¼37¼-38½38½-39½39½-40¾40¾-42¼42¼-44¼44¼-46¼46¼-48¼48¼-50½50½-52¾53¾-5555-57½57½-59¾
Arm length cm56565757575757575858585859595959
Arm length inch22½22½22½22½22½22½22½22½22¾22¾22¾22¾23¼23¼23¼23¼
SIZESXXSXSSMLXLXXL3XL4XL
UK46810121416182022242628303234
EUR32343638404244464850525456586062
Waist cm58-6262-6666-7070-7474-7878-82.582.5-87.587.5-9393-9999-105105-111111-117.5117.5-124.5124.5-131.5131.5-138.5138.5-145.5
Waist inch22¾-24½24½-2626-27½27½-2929-30¾30¾-32½32½-34½34½-36½36½-3939-41¼41¼-43¾43¾-46¼46¼-4949-51¾51¾-54½54½-57¼
Low hip cm79-8383-8787-9191-94.594.5-97.597.5-100.5100.5-103.5103.5-107.5107.5-112.5112.5-117.5117.5-122.5122.5-128128-134134-140140-146146-152
Low hip inch31-32¾32¾-34¼34¼-35¾35¾-37¼37¼-38½38½-39½39½-40¾40¾-42¼42¼-44¼44¼-46¼46¼-48¼48¼-50½50½-52¾53¾-5555-57½57½-59¾
Inside leg length cm74.574.57474747474747373737372727272
Inside leg length inch29¼29¼29292929292928¾28¾28¾28¾28½28½28½28½
Bust: Measure around the fullest part of your bust.
Waist: Measure around the slimmest part of your waist.
Hip: Measure around the widest part of your hip.
 
SIZESBUSTWAISTHIPS
(inch)(cm)(inch)(cm)(inch)(cm)
XXS307626662686
XS328128712891
S348630763097
M3692328132102
L3897348634107
XL40102369136112
XXL42107389738117
3XL441124010240122
4XL461174210742127
5XL481224411244132
Size101214161820222428303234363840
Bust35ins 89cms37ins 94cms39ins 99cms41ins 104cms43ins 109cms45ins 114cms47ins 119.5cms49ins 124.5cms51ins 129.5cms53ins 134.5cms55ins 140cms57ins 145cms59ins 150cms61ins 155cms63ins 160cms
Waist28ins 71cms30ins 76cms32ins 81cms34ins 86.5cms36ins 91.5cms38ins 96.5cms40ins 101.5cms42ins 106.5cms44ins 111.5cms46ins 117cms48ins 122cms50ins 127cms52ins 132cms54ins 137cms56ins 142cms
Hips37ins 94cms39ins 99cms41ins 104cms43ins 109cms45ins 114cms47ins 119.5cms49ins 124.5cms51ins 129.5cms53ins 134.5cms54ins 140cms57ins 145cms59ins 150cms61ins 155cms63ins 160cms65ins 165cms
Some brands may vary from these measurements but you can still use them as a guide.
SIZESXXXSSMLXLXXL3XL
UK283032343638404244565860626466
EUR384042444648505254565860626466
Chest cm74-7878-8282-8686-9090-9494-9898-102102-106106-110110-114114-118118-122122-126126-130130-134
Chest inch29-30¾ 30¾-32¼32¼-33¾33¾-35½35½-3737-38½38½-40¼40¼-41¾41¾-43¼43¼-44¾44¾-46½46½-4848-49½9½-51¼51¼-52¾
Waist cm62-6666-7070-7474-7878-8282-8686-9090-9494-98.598.5-103103-107.5107.5-112112-116.5116.5-121121-1255
Waist inch24½-2626-27½27½-29¼29¼-30¾30¾-32¼32¼-33¾33¾-35½35½-3737-38¾38¾-40½40½-42¼42¼-4444-45¾45¾-47½47½-49½
Neckline cm333435363738394041424344454647
Neckline inch1313¼13¾1414½1515¼15¾1616½1717¼17¾1818½
Arm length cm5959595960606161626262.562.5636363
Arm length inch23¼23¼23¼23¼23½23½242424½24½24¾24¾252525

SHIRTS: How to find the perfect size on shirts when using ties/bows: Measure your neck, the collar needs to fit properly.

SIZESXXSXSSMLXLXXL3XL
UK242628303233343638404244464850
EUR384042444648505254565860626466
Waist cm62-6666-7070-7474-7878-8282-8686-9090-9494-98.598.5-103103-107.5107.5-112112-116.5116.5-121121-125.5
Waist inch24,4-2626-27½27½-29¼29¼-30¾30¾-32¼32¼-33¾33¾-35½35½-3737-38¾38¾-40½40½-42¼42¼-4444-45¾45¾-47½47½-49½
Low hip cm82-8685.5-88.588.5-91.591.5-94.594.5-97.597.5-100.5100.5-103.5103.5-106.5106.5-109.5109.5-112.5112.5-115.5115.5-118.5118.5-121.5121.5-124.5124.5-127.5
Low hip inch32¼-33¾33½-34¾34¾-3636-37¼37¼-38¼38¼-39½39½-40¾40¾-4242-43¼43¼-44¼44¼-45½45½-46½46½-47¾47¾-4949-50
Inside leg length cm7676.57777.57878.57979.58080.2580.580.758181.2581.5
Inside leg length inch29¾3030¼30½30¾313131¼31½31½31½31¾31¾3232
Size in inches25"26"27"28"29"30"31"32"33"34"36"38"40"42"44"
Waist cm64-6767-7070-7373-7575-7878-8181-8484-8787-8989-9294-98100-104106-110112-116118-122
Waist inch25-26½26½-27½27½-28½28½-29½29½-3131-3232-3333-3434-3535-36½37-38½39-4141½-43½44-45½46½-48;
Low hip cm84-8686-8888-9090-9292-9494-9797-9999-101101-103103-105106-109110-113114-117118-121122-125
Low hip inch33-3434-34½34½-35½35½-3636-3737-3838-3939-4040-40½40½-41½42-4343½-44½45-4646½-47½48-49
Inside leg length:               
30" length cm75-7775-7776-7876-7877-7977-7977-7979-8079-8079-8079-8179-8179-8180-8280-82
30" length inch29½-3029½-3029½-3029½-3030-3130-3130-3130-3130-3130-3131-31½31-31½31-31½31-31½31-31½
32" length cm79-8179-8180-8280-8281-8381-8381-8382-8482-8482-8483-8583-8583-8584-8684-86
32" length inch31½-3231½-3231½-3232-3332-3332-3332-3332-3332-3332-3333-33½33-33½33-33½33-33½33-33½
34" length cm83-8583-8584-8684-8685-8785-8785-8786-8886-8886-8887-8987-8987-8988-9088-90
34" length inch33½-3433½-3433½-3433½-3434-3534-3534-3534-3534-3534-3535-35½35-35½35-35½35-35½35-35½

Jeans sizes are often given in inches, e.g. 33/32. The first number is the waist measurement and the second is the inner leg length.
When no length is mentioned in the size name, it means it´s a regular length. You can find further size information under length size 32”.