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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 (13089)

4.3

67% Recommended this product

Mentions
17 July 2026JanH26
Verified Purchase

A super fit and very comfortable.

I now have three pairs - mid blue, dark blue and black. They are so comfortable and a great fit.

Helpful?

16 July 2026MummaSusieQ
Verified Purchase

Longer than last time

Yes, I recommend this

Good jeans, good quality, I’ve always bought them. But this time they’re a little longer!

Reviewer Ratings

How did it fit?

True to size

Length

Value for Money

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Value for Money

Excellent

16 July 2026Henry 007
Verified Purchase

Great quality

Yes, I recommend this

Good fit true to size lovely colour and washes well.

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

15 July 2026KJT53
Verified Purchase

Extra short!!

Yes, I recommend this

Thank you for providing these jeans in extra short. This was the first time I have been able to buy a pair of jeans and wear them on the same day without having them altered or massively rolled up. Please offer this length on more trousers.

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

14 July 2026Rowena CG
Verified Purchase

Can't go wrong

Yes, I recommend this

Lightweight, v comfortable, useful jeans - extra long is really long.

Reviewer Ratings

How did it fit?

True to size

Length

Excellent

Value for Money

Excellent

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Excellent

Value for Money

Excellent

Material

Excellent

Style

Good

14 July 2026Surreyfoodie
Verified Purchase

Great fit and very flattering

Yes, I recommend this

Great jeans, fit well and are very flattering. The leg width is perfect - not too skinny, just straight. My only gripe is that in-store there are often very few smaller sizes in stock. I am an 8 - 10 and usually have to order online.

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

13 July 2026peggycat
Verified Purchase

Great Jeans

Yes, I recommend this

Great quality smart jeans; wash and iron well. This second pair I’ve purchased

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

13 July 2026Cal ROI
Verified Purchase

Sienna Straight Leg Jeans

Originally posted on marksandspencer.ie

Yes, I recommend this

My favourite jeans, very comfy, great length in the short/petite gives you choices, so I can roll up to be shorter in the summer. Good quality. Unfortunately, I had to return two size 14’s which is my usual size because they were wrongly labelled & were more like a 10/12!! No, I’m not in denial!! I already have a size 14 pair. M&S sizing reliability is very poor nowadays especially when buying online & my local store only had long length. I love the colour of oddly named dark blue when it’s clearly lighter blue!!

Helpful?

11 July 2026Ladypatricia70
Verified Purchase

Perfect !

Yes, I recommend this

Very comfortable, great quality, and a perfect length. I would buy again. The usual Marks and Spencer quality. I have full trust in this company

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Average

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Good

Value for Money

Average

Material

Excellent

Style

Excellent

11 July 2026
Verified Purchase

Love straight jeans but not too tight

Yes, I recommend this

So as im getting on in years and still love straight jeans but finding the tightness of a size 12 starting to feel less comfortable l ordered a size 14 which is so much better. Accepting a more mature middle needs slightly more breathing space 👍

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

10 July 2026Jane214
Verified Purchase

Great jeans

Yes, I recommend this

Stylish jeans I have them in different colours wash and wear very well.

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

09 July 2026MC07
Verified Purchase

Generally good fit

Yes, I recommend this

Tighter in the waist than than other Sienna styles, but a good fit through the leg

Reviewer Ratings

How did it fit?

A bit small

Length

Good

Value for Money

Good

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How did it fit?

A bit small

Length

Good

Value for Money

Good

Material

Excellent

Style

Good

08 July 2026Laineyyork123
Verified Purchase

Fantastic jeans

Yes, I recommend this

I bought the white ones, petite as I’m 5 2” perfect length and true to size they are fantastic for the price !

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

07 July 2026Christine1089
Verified Purchase

More clinging than usual.

There seems to be less material in this pair, maybe it has more elasticity so clings more. I hope with time and washes, they will fit better.

Reviewer Ratings

Value for Money

Average

Material

Good

Style

Good

Helpful?

Reviewer Ratings

Value for Money

Average

Material

Good

Style

Good

07 July 2026Dottywhat
Verified Purchase

Good quality

Nice jeans but thought I'd ordered high waist.Never mind fit well

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

07 July 2026Barum Maid
Verified Purchase

Jeans

Very good fit for me. I am 5ft 6 ins. Comfortable with stretch.

Helpful?

06 July 2026Helenanddogs
Verified Purchase

Great fit for us “pear shapes” with long legs!

Yes, I recommend this

Had a pair of these Sienna trousers in black and love the style and fit! I’m 5ft 10 inches and a pear shaped body. Is great to get them in a 35 inch leg too. This colour is a nice fresh summer denim blue. Will keep on buying this style that I hope continues!

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

06 July 2026Pippa 14
Verified Purchase

Stylish straight leg jeans

Yes, I recommend this

Great fitting jeans, very flattering and comfortable. Good price too. Would purchase again

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 July 2026Jolene 2
Verified Purchase

A good buy.

Yes, I recommend this

Fit well, comfortable, and they look good. All you can ask for really!

Reviewer Ratings

How did it fit?

True to size

Length

Excellent

Value for Money

Excellent

Helpful?

Reviewer Ratings

How did it fit?

True to size

Length

Excellent

Value for Money

Excellent

04 July 2026MollyPolly12
Verified Purchase

Fantastic

Yes, I recommend this

I have turned them into crop jeans because I love the fit and I knew they would be perfect as crop jeans too!

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

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