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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

€32

Colour

Waist

Inside Leg

Free standard delivery over €75

Reviews (13065)

4.4

67% Recommended this product

Mentions
27 August 2026Choosyshoes123

Excellent value

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

27 August 2026Bac10

Soft denim and well fitting

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

27 August 2026Deano1621

Good quality fits nice and comfortable

Originally posted on marksandspencer.com (UK)

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

Perfect Jeans

Originally posted on marksandspencer.com (UK)

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

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

26 August 2026Bob Mary 48

Looked good

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

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

Reviewer Ratings

How did it fit?

Good

Value for Money

Average

Helpful?

Reviewer Ratings

How did it fit?

Good

Value for Money

Average

26 August 2026elizzzy

Very comfortable style.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

25 August 2026Jay F B

Good fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Average

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Average

25 August 2026Monkart22

Fab

Originally posted on marksandspencer.com (UK)

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

Really comfortable jeans

Originally posted on marksandspencer.com (UK)

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

Disappointing fit.

Originally posted on marksandspencer.com (UK)

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

Good fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Good

23 August 2026Turncoat

Really good jeans

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

22 August 2026clotheslover68

Good comfortable jeans

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

True to size

How did it fit?

Excellent

Value for Money

Good

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Excellent

Value for Money

Good

Material

Excellent

Style

Good

22 August 2026NannyAndrea

Love these

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

A bit small

How did it fit?

Good

Value for Money

Good

Material

Good

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

How did it fit?

Good

Value for Money

Good

Material

Good

Style

Excellent

22 August 2026Sue Ash

Well worth the price !

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

Large

How did it fit?

Helpful?

Reviewer Ratings

How do you feel about the size?

Large

How did it fit?

21 August 2026Sugarmummy

Good value jeans

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Reasonable price for jeans that fit well and look good.

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Good

20 August 2026MBGav

Sienna straight leg jeans

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.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

18 August 2026PritchT

Great Jeans

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These have to be my favourite jeans, look good with a blouse and jumper. Very comfy, true to size.

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

17 August 2026Pol1961

Perfect fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These size 10 jeans fit perfectly. I always buy M&S jeans. You can’t go wrong

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

17 August 2026leedsnow

Good jeans

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought these jeans before and they are true to size although whereas before I always got length long I had to return them and re-order it in extra long but other than that they are great

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

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