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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 (12996)

4.3

67% Recommended this product

Mentions
15 July 2026KJT53

Extra short!!

Originally posted on marksandspencer.com (UK)

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 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

14 July 2026Rowena CG

Can't go wrong

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Excellent

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?

Excellent

Value for Money

Excellent

Material

Excellent

Style

Good

14 July 2026Surreyfoodie

Great fit and very flattering

Originally posted on marksandspencer.com (UK)

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 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

11 July 2026Ladypatricia70

Perfect !

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Average

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

Average

Material

Excellent

Style

Excellent

11 July 2026

Love straight jeans but not too tight

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

True to size

How did it fit?

Excellent

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?

Excellent

Value for Money

Excellent

Material

Excellent

Style

Excellent

10 July 2026Jane214

Great jeans

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

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

09 July 2026MC07

Generally good fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

A bit small

How did it fit?

Good

Value for Money

Good

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

How did it fit?

Good

Value for Money

Good

Material

Excellent

Style

Good

08 July 2026Laineyyork123

Fantastic jeans

Originally posted on marksandspencer.com (UK)

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 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

07 July 2026Christine1089

More clinging than usual.

Originally posted on marksandspencer.com (UK)

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

Good quality

Originally posted on marksandspencer.com (UK)

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

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

07 July 2026Barum Maid

Jeans

Originally posted on marksandspencer.com (UK)

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

Helpful?

06 July 2026Helenanddogs

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

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Good

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

Good

Style

Excellent

06 July 2026Pippa 14

Stylish straight leg jeans

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

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

04 July 2026Jolene 2

A good buy.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Excellent

Value for Money

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Excellent

Value for Money

Excellent

04 July 2026MollyPolly12

Fantastic

Originally posted on marksandspencer.com (UK)

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 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

03 July 2026newboots12

Always good

Originally posted on marksandspencer.com (UK)

I have had several pairs of these jeans and they are always good

Helpful?

03 July 2026Shazzie15

My go-to comfy jeans!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Have had a few pairs of these jeans in all the colours and love the fit - perfect for me!

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

02 July 2026Clauds

Comfort and value

Yes, I recommend this

Marks & Spencer jeans never disappoint, always comfortable and great value for money

Helpful?

02 July 2026Rosie D

Useful jeans

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I bought a pair of these Sienna jeans in White a few years ago and decided that another pair of black jeans would be useful as I practically live in them! The white ones were a size S , so I measured them to check on length before ordering. It turns out that the S white ones are the same length as the XS Black ones! So I ordered the XS in Black and they are ok, in fact a tiny bit longer than the white. I really wish that M&S were more consistent in their sizing - if I hadn't checked the measurements prior to ordering, I would be returning them.

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Excellent

Value for Money

Good

Material

Good

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

Good

Style

Good

02 July 2026Poppi

Sienna jeans

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Good fit. I'm lucky that the length is just right, and means I dont have to do any alterations.

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

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