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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

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 £75

Reviews (13156)

4.3

67% Recommended this product

Mentions
30 August 2026svenska89
Verified Purchase

Smart and comfy!

Yes, I recommend this

Well designed, very comfy and with a lovely stretch in the fabric. I find them great and look forward to getting more of them.

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

30 August 2026Julz43
Verified Purchase

Great quality & size

Yes, I recommend this

Love these jeans, have all colours Great fit Great short length (I'm 5'2)

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

27 August 2026Choosyshoes123
Verified Purchase

Excellent value

Yes, I recommend this

Really good fit and good denim material with slight stretch. Perfect!

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

27 August 2026Bac10
Verified Purchase

Soft denim and well fitting

Yes, I recommend this

Soft denim and well fitting. Wash really well. Only thing is I have two different colours denim in two different sizes and they both fit perfectly. A good buy!

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

27 August 2026Deano1621
Verified Purchase

Good quality fits nice and comfortable

Fits comfortable and worth the money thank you 🤩 hey people go buy them!!!!

Reviewer Ratings

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

Material

Excellent

Style

Excellent

26 August 2026More than Disgusted
Verified Purchase

Perfect Jeans

As described. Perfect colour. Perfect stretch. Perfect fit. Perfect length. Comfy.

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

26 August 2026Bob Mary 48
Verified Purchase

Looked good

No, I don't recommend this

Nice jeans more like a size 12 than 16 couldn’t even do them up.

Reviewer Ratings

Length

Good

Value for Money

Average

Helpful?

Reviewer Ratings

Length

Good

Value for Money

Average

26 August 2026elizzzy
Verified Purchase

Very comfortable style.

Yes, I recommend this

First for me with skinny leg style. Comfortable to wear.

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

25 August 2026Jay F B
Verified Purchase

Good fit

Yes, I recommend this

Found a good fit at last. I am 5ft 3ins tall and size 12 fits nicely.

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Average

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Average

25 August 2026Monkart22
Verified Purchase

Fab

These denim jeans are comfortable to wear and fit perfectly. They are keenly priced and are soft to the touch. My only criticism (and it's a big one) is that the pockets are not nearly deep enough. I cannot trust putting my small change (coins) therein. Why do designers think that women's jeans (or unisex, as these ones are) do not require deep pockets? Unladylike? Nope!! Square and unhip? Nope!! C'mon, be sensible and practical, make these jeans even better than they already are.

Reviewer Ratings

Style

Excellent

Helpful?

Reviewer Ratings

Style

Excellent

25 August 2026DP222
Verified Purchase

Really comfortable jeans

My go to jeans. Unfortunately they run very small and I always have to go up a size. Not often available.

Reviewer Ratings

Style

Good

Helpful?

Reviewer Ratings

Style

Good

25 August 2026Jo Davmac
Verified Purchase

Disappointing fit.

No, I don't recommend this

The local store doesn’t stock PETITE hence ordered online. Disappointed to receive only SHORT which had all ready been tried in store and rejected - reason being hips width is actually sitting on my thighs! Hopeless! I understand PETITE to mean all sizes are scaled down. Very disappointed and annoyed I had to trail into town to return them.

Helpful?

24 August 2026bw58
Verified Purchase

Good fit

Yes, I recommend this

I have bought Sienna Jeans before they were good therefore I bought more

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Good

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Good

23 August 2026Turncoat
Verified Purchase

Really good jeans

Yes, I recommend this

These are excellent jeans and great value for money. I usually take a size 8 in M & S trousers, but I needed a size 10 in this style. They are quite a tight fit.

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

22 August 2026clotheslover68
Verified Purchase

Good comfortable jeans

I waited many weeks for these jeans to be in stock as they are very popular, especially the Petite version. They were worth waiting for and I find them a good fit and comfortable to wear.

Reviewer Ratings

How did it fit?

True to size

Length

Excellent

Value for Money

Good

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Excellent

Value for Money

Good

Material

Excellent

Style

Good

22 August 2026NannyAndrea
Verified Purchase

Love these

Yes, I recommend this

Had to buy a size 14 instead of my usual size 12 , the sizes seem to be a lot smaller now , all my usual size 12 fit so I’m sorry to say m and s have a problem with sizing . But I still love their jeans

Reviewer Ratings

How did it fit?

A bit small

Length

Good

Value for Money

Good

Material

Good

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

A bit small

Length

Good

Value for Money

Good

Material

Good

Style

Excellent

22 August 2026Sue Ash
Verified Purchase

Well worth the price !

Yes, I recommend this

Very pleased with my purchase. I got the regular length and they were a touch long but still looked good and felt comfortable. Would rebuy these.

Reviewer Ratings

How did it fit?

Large

Length

Helpful?

Reviewer Ratings

How did it fit?

Large

Length

21 August 2026Sugarmummy
Verified Purchase

Good value jeans

Yes, I recommend this

Reasonable price for jeans that fit well and look good.

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

20 August 2026MBGav
Verified Purchase

Sienna straight leg jeans

Originally posted on marksandspencer.ie

Yes, I recommend this

Perfect fit and length, material is so soft and comfortable. Definitely buy again and in other colours. Amazing quality for the price.

Helpful?

19 August 2026Tania 27
Verified Purchase

Great colour really dark denim

Yes, I recommend this

Love the price £26, great colour of indigo dark denim, size short great for me at 5ft 4,

Reviewer Ratings

How did it fit?

A bit large

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

A bit large

Length

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

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