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Sienna Straight Leg Jeans

Product code: T577566

About this style

Add a touch of contemporary style to your everyday wardrobe with these Sienna denim jeans. The mid-rise design and straight leg cut offer a classic silhouette, while the super stretchable fabric provides all-day comfort and flexibility with a soft, comfortable feel. Perfect for casual wear, finished with a practical button and zip fastening for a secure fit. M&S Collection: easy-to-wear wardrobe staples that combine classic and contemporary styles.

Straight: Classic fit from hip to hem

Details & care

Item details

Model Height: 5ft9"/176cm

Model is wearing size: 8 Long

Fit and style

Straight leg

Button and zip fastening

Mid rise

Composition

80% cotton, 18% polyester and 2% elastane

Care

Wash at 40°C

Do not bleach

Do not tumble dry

Iron at medium temperature

Do not dry clean

M&S

Sienna Straight Leg Jeans

£26

Colour

Customers say:

Fits true to size()
Waist

Inside Leg

Free standard delivery over £60

Reviews (12808)

4.3

67% Recommended this product

Mentions
05 May 2026J Abingdon
Verified Purchase

Great jeans

Yes, I recommend this

I really like the cut of these jeans and am pleased they are still stocked, as they fit me well. I chose indigo blue this time round for a change and the colour is just right.

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

05 May 2026Londonlady58
Verified Purchase

Straight leg jeans.

The fit and the quality of the new Sienna jeans is not as good as the older pairs I have. They are still good value for money but try them on to get a good fit.

Reviewer Ratings

How did it fit?

A bit small

Length

Good

Value for Money

Good

Material

Average

Style

Good

Helpful?

Reviewer Ratings

How did it fit?

A bit small

Length

Good

Value for Money

Good

Material

Average

Style

Good

05 May 2026HorburyGirl
Verified Purchase

Very comfortable.

Yes, I recommend this

Jeans very comfortable. I bought size 12 short but they are long so will need shortening. Again!!

Reviewer Ratings

How did it fit?

True to size

Length

Value for Money

Good

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Value for Money

Good

Material

Excellent

Style

Good

05 May 2026DKC58
Verified Purchase

Great fit

Yes, I recommend this

Look good, great fit. Look really nice and good material.

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

05 May 2026Fordogs
Verified Purchase

SIZE ?????

Yes, I recommend this

M&S sizing has gone mad! Last year size 8 was generous this year size 8 measurements match size 6 from last year. Had to buy size 10 which measured against last year's 8 the 10 is slightly smaller. Stressful not happy you need to check your tape measure.

Helpful?

04 May 2026TECHNOLYN
Verified Purchase

Best value jeans

Yes, I recommend this

I love these Sienna jeans so I bought another pair in dark denim. Thanks to the stretch they fit perfectly and feel comfortable. The price is amazing. One of the best things M&S sell. Definitely a fan 👏👏

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

04 May 2026pandora27
Verified Purchase

Great Jeans

Yes, I recommend this

Really comfortable jeans and the leg length is perfect for me. I would love some more colour options

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

04 May 2026Issa
Verified Purchase

Great fit

Yes, I recommend this

I love these jeans as they fit well and the fabric is soft. Great they come in several lengths

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

04 May 2026Fifi59
Verified Purchase

Great jeans.

Yes, I recommend this

Nice jeans,fit well and not too wide or narrow good for small people like me.

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Good

04 May 2026mad4shopping
Verified Purchase

Great jeans

Yes, I recommend this

Great jeans. Nice shape and very comfortable. Bought in black colour so can be dressed up for smarter occasions.

Reviewer Ratings

How did it fit?

True to size

Length

Excellent

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Excellent

Value for Money

Excellent

Material

Excellent

Style

Excellent

04 May 2026peanut2012
Verified Purchase

Amazing jeans

Yes, I recommend this

Really comfy. Nicely fits on bottom and hips. Very slimming

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

04 May 2026SuLea
Verified Purchase

Really nice fitting jeans that are long enough

Yes, I recommend this

Great fitting jeans and good value. I was really pleased that they came in extra long length and the length was long enough for me( I am 5ft 10in) and the long length at M&S is usually not long enough for me. Really nice jeans would recommend.

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

03 May 2026busylady61
Verified Purchase

Just right

Yes, I recommend this

After trying various other styles of jeans, I came back to my old favourites and realised why I liked them so much - no gimmicks, fit well, look good, comfortable.

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

03 May 2026Rick45
Verified Purchase

Good Value

Practical and good value for money. The only downside for me is the waist is way too big. The rest of the jeans fit perfectly.

Reviewer Ratings

How did it fit?

A bit large

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How did it fit?

A bit large

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Good

03 May 2026Jan DR
Verified Purchase

Very pleased

Yes, I recommend this

Extremely fast delivery and very pleased with quality and fit of the jeans.

Reviewer Ratings

How did it fit?

True to size

Length

Good

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

02 May 2026Squirrel11
Verified Purchase

Great fit

Yes, I recommend this

Finally I have managed to find a pair of your jeans in a size 10 and an extra short fitting. I wish it was easier to find them

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Good

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Good

Style

Excellent

02 May 2026Borwry
Verified Purchase

Skimpy!

No, I don't recommend this

This pair of jeans is at least 1cm narrower at the knee than my last pair with an identical label. Disappointing.

Reviewer Ratings

How did it fit?

A bit small

Length

Good

Value for Money

Poor

Material

Excellent

Helpful?

Reviewer Ratings

How did it fit?

A bit small

Length

Good

Value for Money

Poor

Material

Excellent

02 May 2026walto1946
Verified Purchase

Straight legged jeans

Had some before really like them will get the black ones soon

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 May 2026myweimaramer
Verified Purchase

Beautifully Soft Jeans

Yes, I recommend this

Very pleased with these Jeans lovely colour far better than both the jeans from M&S priced at £36 & £46 on me that is they just hug me in all the right places and are soo comfortable..

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Good

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Good

01 May 2026Sue0489
Verified Purchase

Terrible sizing

No, I don't recommend this

I bought these straight jeans in store in the dark blue denim and found they came up small so I sized up to a 14 which fit perfectly. When I came home I measured them against my other size 12 jeans and found they were the same waist size. I subsequently ordered another pair in the lighter denim in a 14 and they were huge so I had to return them. M&S I wish you would get your jean sizes consistent in all shades and styles across your entire range as I’m loathe to order online and then keep having to reorder and return different sizes.

Reviewer Ratings

How did it fit?

Small

Length

Good

Value for Money

Good

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How did it fit?

Small

Length

Good

Value for Money

Good

Material

Excellent

Style

Good

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