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Cotton Rib Non Wired Plunge Bra A-E

Product code: T818922N

About this style

Cotton rib and form fitting jersey combine on this Juni bra for an understated, off duty feel. Lace trim runs along the neckline for a soft detail. This B by Boutique style is non wired and padded for a natural, comfortable shape. B by Boutique: Playful lingerie designed for good times.

M&S

Cotton Rib Non Wired Plunge Bra A-E

£15

Colour

Band Size

Cup Size

Also available in: Push-Up Plunge Bra A-E
Free standard delivery over £75, otherwise from £3.99

Reviews (22)

4.6

91% Recommended this product

Mentions
25 October 2026Frazersmum
Verified Purchase

Comfy

Yes, I recommend this

Wanted the white but out of stock. Chose grey with plan to keep eye on white one if it fitted. Soft, flexible just enough support, can’t tell I’m wearing it Nice thick band at back Found straps abit hard to adjust but have arthritis in fingers. Yet to wash it so can’t comment on wasability

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

23 October 2026Jeanette R
Verified Purchase

Best bra ever

Yes, I recommend this

Best bra i have ever had... Never been able to keep straps up on my shoulders because they slope, strapless bras are good but cause discomfort due to the under wiring. This bra with its little clip on the back keeps straps up and no discomfort

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

05 October 2026Lamont78
Verified Purchase

Really comfy

Yes, I recommend this

Great bra for relaxing in, I wear it around the house. If you don’t mind a relaxed fit it would be ok for outside too

Helpful?

19 September 2026Stylish clothes horse
Verified Purchase

Comfortable bra

Yes, I recommend this

Wanted a non-underwired bra for a change. Really comfortable fit and due to the material, much cooler the my normal bras. Gives some support

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 September 2026waldewilf
Verified Purchase

Most comfortable bra ever!

Yes, I recommend this

A really comfortable bra for everyday. No scratchy details. I bought 3!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 September 2026Alison Tipperary 22
Verified Purchase

Excellent comfortable cotton bra

Originally posted on marksandspencer.ie

Yes, I recommend this

Lovely comfortable cotton bra. Bought for my teen daughter, loved it so much, she asked me for another.

Helpful?

29 August 2026ElisaW
Verified Purchase

Very comfortable

Yes, I recommend this

I always buy underwired bras, but am starting to find them uncomfortable. I was so happy with the bra in grey, that I bought it in white as soon as there was availability online. It’s both comfortable and very supportive. Would definitely recommend.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

26 August 2026N FAli
Verified Purchase

padded bra . did not like the material

Yes, I recommend this

padding was not of good quality. not suitable for me personally .

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

23 August 2026Coremarkscustomer
Verified Purchase

Comfy but only partly cotton

I was looking for a cotton bra and didn't notice that, although this is advertised as cotton rib and looks like cotton on the outside, the inside is lined with man-made fabrics. Only 65% cotton.

Helpful?

03 August 2026Krissyzzz
Verified Purchase

Comfortable and pretty

Yes, I recommend this

Material is very comfortable in the hot weather and looks pretty.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 August 2026dedasadodo
Verified Purchase

Good shape

Yes, I recommend this

The bra gives a good shape especially if your boobs have lost their youthful firmness. The actual cups are quite heavy though so you need to get the straps right or the whole bra sort of sags downwards.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

30 July 2026RaeRae007
Verified Purchase

Padded Bra

Yes, I recommend this

Cotton Bra with no underwiring which I always find uncomfortable.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

27 July 2026Sarah28
Verified Purchase

Beautiful shape

Yes, I recommend this

Love the cotton fabric. Breathable, beautifully designed and gives a lovely natural shape under your clothes despite being unwired. Very comfortable to wear. Will buy again. Nude colours next please.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

23 July 2026jenda
Verified Purchase

Very comfortable

Yes, I recommend this

Bought on impulse but very pleased as comfortable and a good fit. Like the band under the cups and the cotton content- ideal in the hot weather. Have since bought again in white and wish it was available in black or other colours.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

20 July 2026teddyw
Verified Purchase

Excellent quality

Yes, I recommend this

Lovely well-fitting bra in a very welcome cool cotton finish. Very easy to wear during the current heat wave, and it looks pretty!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

13 July 2026Suprana8
Verified Purchase

Too small for stated size.

No, I don't recommend this

I measured under my bust several times before ordering, each time the tape measure read 36 inches. However, this "36" D bra is so tight around the ribs I can't do it up. The D part of it is fine. I'm waiting on a better bra extender before wearing this, though I was hoping to avoid this kind of thing. Not very pleased about this.

Reviewer Ratings

How did it fit?

Small

Helpful?

Reviewer Ratings

How did it fit?

Small

05 July 2026Donzbell
Verified Purchase

Nice bra

Yes, I recommend this

Really lovely, great sizing, supportive & comfy. Would recommend

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 July 2026Idonotwishtobeidentified
Verified Purchase

Comfortable , cotton and good value

Yes, I recommend this

It is so nice to find a bra that is not wired and is sold singularly. This bra is not only comfortable but it is made of cotton. So few are. I wish Marks & Spencer would sell more plunge bras like this.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

17 June 2026Mini Minoo
Verified Purchase

Beautiful Cotton Bra

Yes, I recommend this

Beautiful shape under tight-fitting tops, fresh cotton material, super comfortable and gorgeous with matching briefs.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 June 2026LinnetB
Verified Purchase

Convert to this comfortable cotton bra.

Yes, I recommend this

I am a complete convert. Usually wear plunge wired styles which tend to ride up your bust. This cotton bra offers a wide supportive underband. The cups shape and support.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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