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Body Define™ Firm Control Waist Cincher Knickers

Product code: T326762W

About this style

These Body Define™ firm control knickers offer a high-rise design that provides smoothing and shaping with comfortable control. The waist-nipping effect helps define the silhouette while striped sheer panels add a touch of elegance. Made from innovative fabrics, the knickers deliver flexible support that moves with the body throughout the day.

Please don’t worry if the packaging name looks a little different, it’s still the same colour, our packaging just takes a little longer to update. Opaline formerly known as Almond.

Details & care

Style

Control: Firm control

Features

Your secret to staying cool all day is Cool Comfort™

Composition

61% polyamide, 39% elastane (exclusive of trimmings), Gusset (of underwear) - 100% cotton

Care

Wash at 40°C

Do not bleach

Tumble dry medium temperature

Iron at low temperature

Do not dry clean

M&S

Body Define™ Firm Control Waist Cincher Knickers

€29

Colour

Size

Free standard delivery over €75

Reviews (468)

3.7

50% Recommended this product

Mentions
06 June 2026Ewalt5

Great support

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great item support is great,just need in white,sizing great downsize for more support

Reviewer Ratings

How do you feel about the size?

A bit large

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

01 June 2026Consolation

Highly recommended

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Perfect fit. Worked a treat! It’s hard to accept a growing waistline so this works 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

25 May 2026Fancis 234

This is too long

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

For knickers it is much too long - knichers would usually finish at the waist - not upwards to the bust! The sizing is also quite small.

Reviewer Ratings

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

22 May 2026mandsshopper17

Good undergarment!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Does what it's designed to do. Sucks you in and keeps tummy flat. Very happy with it.

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

20 May 2026Molly1122

Great product

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I thought this waist cincher was perfect to wear under my dress at a wedding. It definitely was firm control

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

19 May 2026JMY70

Great fit! Perfect 👌🏻

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great for hiding your wobbly bits 😍 looks smooth on with fitted dress.

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

24 April 2026Albsta

Not impressed

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Not impressed by the pants The top rolls down easily so don’t stay in place

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

20 April 2026Queenager 51

Suck it all in

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Lovely idea but it’s not long enough in the body for me. Does the job though, but I needed to keep pulling it up.

Reviewer Ratings

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

20 April 2026Swetli

Good quality shaper

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Comfortable and high quality material. Great value. I wear these with my bodycon dresses these days as have gained some menopause weight. These made me feel more confident and less self conscious.

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

12 April 2026L Newman

Comfortable

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These are great. Comfortable and give a great shape. No roll down on wearing. I've had one pair come apart at the gusset, though.

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

12 April 2026Linnypops23

Good quality, comfy to wear. Gives great shape.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Loved the item, really comfortable. Perfect for what I need

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

05 April 2026Jay96

Stayed in place

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I was worried this would roll down at the top but it stayed in place just fine! Used for a wedding and was very comfortable - size 20

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

28 March 2026Michelle116

Super useful girdle

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Really useful for helping deal with a Spigelian Hernia. Washes well and keeps its shape.

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

23 March 2026Ljbett

Good buy

Originally posted on marksandspencer.com (UK)

True to size, good price. No complaints, will recommend and purchase again.

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

19 March 2026AnnCan

Too tight despite ordering two sizes bigger

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Stronger control garment needed for wedding outfit

Helpful?

16 March 2026Sonny F

You need to order a size bigger

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I bought this to wear under a dress for my nephews wedding. Unfortunately it was too small, so I couldnt pull it up over my belly. The next size up would probably have been a better fit.

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

14 March 2026Shirl1954

Slimline

Originally posted on marksandspencer.com (UK)

Works really well once managed to be pulled up! The elastic at the top of the back has however folded over so now seems to been double and Doesn’t hold the back up

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

08 March 2026Widderflipper1

Brilliant Shapewear

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I love these waist cincher knickers. They're excellent quality, really comfortable to wear all day, don't roll down and keep everything firmly in place, giving me a great silhouette.

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

06 March 2026CMK8

Great product, good price

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought to wear underneath an occasion dress. I am a size 10/12 at the hips/waist and bought both the size 10 and 12 for click and collect. The size 10 fit well - snug but smoothed the stomach and 'saddlebags' areas well. Really glad that I was able to try both on upon collection and return the size 12 immediately. I don't think other shops necessarily offer this option when ordering online (often there aren't any relevant sizes in stock, so you're taking a risk by ordering without trying on first especially with shapewear). IT wasn't uncomfortable for the whole 10+ hours of wear. I have a short torso so the top seam rolled down a bit where it met the bottom of my bra, but it wasn't too bad. Can't comment on VPL as my dress wasn't clingy in the bum area. Since washing the seams haven't frayed so I think it will last a while, but would recommend putting it in a mesh bag to avoid snags. Overall happy with it and felt the pricepoint (no discount) was reasonable for the job I wanted it to do.

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

04 March 2026GillC21

Think About What You Need

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

The body shaper is effective but it will only smooth your outline around the belly. It will not eliminate all the unwanted bits eg. It can look smooth below the bust, but then push the excess to around the bra line which defeats the object. If you're worried about the whole torso, your probably better off buying a full body shaper. Also, if you just buy your regular size its a bit of a push and pull to get it on. So I suggest you go up a size to make it as comfortable as possible, but you might find it slips a little. Depends on your needs but I think I'd go for a full body shaper next time.

Reviewer Ratings

How do you feel about the size?

A bit large

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

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