Free Bra Fitting UK: M&S vs John Lewis vs Bravissimo Compared (2026)

The quick verdict — which fitting suits you

Roughly 80% of UK women are said to be wearing the wrong bra size, which sounds made up until a fitter puts you in the right one and your whole silhouette changes. The good news is that a professional fitting costs nothing at any of these three retailers — free means free, with no obligation attached.

If convenience is what matters, M&S wins on sheer numbers. There's a branch on practically every high street, the appointment system is painless, and the fitters see hundreds of bodies a month. John Lewis is the middle ground: a department store with several premium brands in one place and expert fitters who can move between them.

Bravissimo is a different animal. It's a fuller bust specialist, so if you're a D cup or beyond, the level of support and comfortyou'll walk out with is genuinely a step above what a generalist can offer. Below a D cup, though, they can't fit you at all — their range simply doesn't go there.

M&S bra fitting: what to expect

M&S runs the biggest fitting operation in the country, and it shows in how slick the process is. You book online in about a minute, picking from six appointment types: regular fit, first bra, sports bra, post-surgery, maternity and nursing. The post-surgery option deserves a mention — the fitters handling it are trained to be discreetand careful, and friends who've used it after treatment rate it highly.

The fitting itself happens in the lingerie department and usually takes under 30 minutes. The M&S method starts with your underband — a fitter shows you how the tape measure should sit, then assesses your cup sizeby eye and fit rather than by maths alone. It's a hybrid approach, and honestly a sensible one, because adding inches to a measurement (the old-school way) is how half the country ended up in the wrong size to begin with.

Two things I rate about M&S specifically. First, the Pay With Me service in bigger stores: the fitter takes handheld payment right there in the fitting room, so you never queue at a till in your coat holding three bras. Second, the range now genuinely covers larger cups — the F-K bras section has grown a lot, and the non-wired options are far better than they were five years ago.

If you can't get to a store, the online bra fit tool is a decent stopgap. It works like a digital flow chart — you feed it your measurements and your best-fitting bra, and the calculator suggests a size and styles. It's used by tens of thousands of people a month, though I'd still treat it as a starting point, not a verdict. Where M&S really earns its keep is value: most bras sit in the £16–£30 bracket, so acting on your new size doesn't hurt.

John Lewis bra fitting: what to expect

John Lewis offers four appointment types — a standard fit, first bra, maternity and nursing, and post-surgery — and you can book in advance online or just ask at the lingerie desk. Their expert bra fitters will measure your ribcage, assess your cup, then show you how to adjusteverything so the bra actually does its job. It's a classic, tape-led fitting, competently done.

The real draw is the brand shelf. Where M&S fits you into M&S bras, John Lewis can pull from Triumph, Chantelle, Fantasie, Freya, Panache, Elomi and Wacoal in a single session. If you've never worn a properly engineered fuller-cup brand before, trying a Fantasie next to a Freya in the same department store changing room is an education — the styles fit differently even in the same size, and a good fitter will tell you which brands run big or small.

Their maternity guidance is more structured than most: they recommend a fitting each trimester, with a final one before your due date to size you into a nursing bra. The nursing bras they'll show you have clips on each strap for one-handed opening and roomier cups that allow for breast pads and daily fluctuation. Post-surgery, specialist fitters are trained around sensitive scar tissue— you'll want to book ahead so one is actually available.

They'll also fit shapewear and swimwear in the same appointment, which neither M&S nor Bravissimo does quite as comprehensively, and their online lingerie buying guideis worth ten minutes before you go. The weak spot? Consistency. I've had a superb fitting at one branch and a rushed, indifferent one at another, and customer reviews say the same. The service is only as good as the fitter you draw on the day.

Bravissimo bra fitting: what to expect

Bravissimo throws out the rulebook — quite literally, because there's no tape measure anywhere in the building. Fitters work entirely fit by eye: they look at how your current bra sits, ask what size it is and which hooks you fasten, watch how the strapsand band behave, and work out your size from there. It sounds like witchcraft. It isn't — it's just a lot of training, and in my experience it's the most accurate fitting of the three.

As a fuller bust specialist, everything in the shop starts at a 28 band and runs through D-L cup sizes. Their own brand sits alongside labels like Panache, Cleo and Freya, and every style is wear-tested in every size before it hits the shelf — some styles come in over a hundred sizes. The fitter will also read your breast shape, not just your size: a balconette for one shape, a full cup for a teardrop shape, and so on. That shape-matching is the bit most high-street fittings skip entirely.

Expect to be shown the “scoop and swoop” — lifting all your breast tissue forward into the cup before judging the fit. Nobody warns you about this the first time. You'll be handed a silky robe between try-ons, the changing room service is unhurried, and staff culture is genuinely inclusive— everyone is welcome and it's stated policy, not lip service.

Two features the others can't match. First, the free virtual fitting: a video call with a real fitter, no tape measure needed, available on live chat through the website until late most evenings — brilliant if your nearest branch is an hour away. You can hop on another webcam call as a follow-up if the bras arrive and something feels off. Second, the swimwearis cut in bra sizes, so the same fitting sorts your bikini. The trade-off: with only around 25 UK shops, most people will need to travel, and if you're below a D cup this simply isn't your shop.

Booking, walk-ins and appointment length compared

This is where the three genuinely diverge, and almost nobody tells you before you set off. John Lewis slots are short — around 15 minutes at many branches. Fine for a quick re-measure, tight if you're starting from scratch. M&S appointments run closer to half an hour, and online booking means you can see real availability before leaving the house rather than turning up hopeful.

Bravissimo sessions are the longest by a distance — trying eight or ten styles can stretch towards an hour, and the fitter won't rush you. The catch is the appointment system isn't obvious: the website suggests you can walk-in, and you can, but at busy branches staff check availability over the radio and you may be quoted a slot hours later. On a Saturday the queue builds fast.

My honest advice: book all three ahead. A weekend walk-in works maybe half the time anywhere, and a last minute cancellation is your only hope when it's busy. Midweek mornings are the sweet spot — I've never had to wait for a Tuesday 10am anywhere.

Size ranges: where each store actually stops

Here's the part the glossy service pages gloss over: not every store can fit every body, and knowing the limits saves you a wasted trip. M&S covers the widest spread at the small end — bands from roughly 28 to 44 and cups from AA upwards, with the fuller-bust range reaching a K cup in selected styles. If you're petite or between an A and a C, M&S has the deepest stock of the three.

John Lewis's own size range is more middling — the core runs to around a GG — but because they carry fuller bust brands like Elomi and Fantasie, larger cups exist on the shelf even where the house range stops. The snag is availability: your branch may only stock a slice of each brand's range, so ring ahead if you're outside the high street average.

Bravissimo is the mirror image: nothing below a D cup, everything from 28-40 bands and D-L cups covered properly, in depth, in multiple styles. And one tip that applies everywhere — learn your sister size (same cup volume, different band: a 32G, 30GG and 28H hold the same). When a style is sold out in your exact size, the sister size one band along is often the difference between leaving empty-handed and leaving happy.

How to prepare for your fitting

Wear your best-fitting current bra — ideally unlined, and wired if that's what you normally wear — because every fitter starts by reading how it sits on you. If you'd rather stay covered during the fitting, a thin fitted top works fine at all three retailers; nobody will make you strip further than you're comfortable with.

Know the warning signs so you can describe them: a band riding up your back means the band is too big, an underwire that shifts when you lift your arms means the cup is wrong, and the dreaded quadboob spilling over the cup edge means you need to size up. Check yourself side-on in the mirror before you go — it gives the fitter a head start. For a complete diagnostic check, view our how to measure bra size guide.

Finally, timing. Get refitted every 6-12 months, and sooner after weight change, hormones shifting, or pregnancy — your size moves more than you'd think. And retire old bras honestly: the elastic in a well-worn bra starts to expireafter about a year of regular wear, at which point even the “right” size no longer fits like it. If your favourite bra is three years old, the fitting will tell you what you already suspect.