The secret sauce of Claudia Winkleman’s Traitors outfits is the high-low mix and the accessible silhouettes that mean we can all get the look on the high street. For every Burberry duffle coat and Bottega Veneta boot, there will be a Spanx legging or a stripy COS knit.

The only fly in the ointment is the fact that many of the pieces tend to be low in stock or sold out by the time the show airs – because, as Claudia’s stylist Sinead McKeefry told us, they film in the summer, which means she's at least one season ahead of us. So how do you get Claudia’s Traitors wardrobe before she does? Head to McKeefry’s favourite high-street brands ahead of time and snap them up before Claudia wears them on the show.

Here’s where to shop every Traitors staple when the time comes. You have your homework Faithfuls.

For knitwear, go to...COS

traitors high street brands
BBC

When I spoke to the fabulous McKeefry this summer ahead of Celebrity Traitors, she told me that she snaps up COS’ fine-knit turtlenecks for layering under everything and we’ve spotted them countless times since: under a Hambro & Miller knitted vest; under a Nadine Merabi mini dress, the list goes on.

But we suggest also checking out the brand’s slightly oversized knits. This striped jumper made an appearance in series four. These are our picks from this season’s collection.

COS Chunky Cashmere Funnel Neck Jumper

Chunky Cashmere Funnel Neck Jumper

COS Chunky Cashmere Funnel Neck Jumper

COS Checked Alpaca-Blend Jumper

Checked Alpaca-Blend Jumper

COS Checked Alpaca-Blend Jumper

COS Merino Wool High Neck Top

Merino Wool High Neck Top

COS Merino Wool High Neck Top

For tailoring, go to...Reiss

traitors high street brands
BBC

Reiss got a big shout out from Claudia’s stylist as one of the best places on the high street for tailoring, whether that’s the flared green trousers or the tailored double-breasted coat from the brand’s atelier, which have both appeared in series four. (McKeefry also likes The Kooples for a more rock ‘n’ roll approach to suiting.)

Next time you’re looking for that new blazer, coat or tailored trouser, you know where to go.

Reiss Carley Wide-Leg Button-Detail Trousers

Carley Wide-Leg Button-Detail Trousers

Reiss Carley Wide-Leg Button-Detail Trousers

Reiss Ember Herringbone Double-Breasted Blazer Wool-Cotton

Ember Herringbone Double-Breasted Blazer Wool-Cotton

Reiss Ember Herringbone Double-Breasted Blazer Wool-Cotton

Reiss Wool-Blend Double-Breasted Blindseam Coat in Chocolate

Wool-Blend Double-Breasted Blindseam Coat in Chocolate

Reiss Wool-Blend Double-Breasted Blindseam Coat in Chocolate

For velvet blazers, go to...Jigsaw

claudia winkleman celebrity traitors hair fringe
BBC

Jigsaw Velvet Satin Shawl Blazer

Velvet Satin Shawl Blazer

Jigsaw Velvet Satin Shawl Blazer

Now 50% Off

Jigsaw Velvet Tailored Single Breasted Blazer

Velvet Tailored Single Breasted Blazer

Jigsaw Velvet Tailored Single Breasted Blazer

Now 30% Off

For pretty shirts and blouses, go to...ME+EM

traitors high street brands
BBC

ME+EM Contrast Collar Blouse Cotton + Silk

Contrast Collar Blouse Cotton + Silk

ME+EM Contrast Collar Blouse Cotton + Silk

ME+EM Layering Blouse + Tie

Layering Blouse + Tie

ME+EM Layering Blouse + Tie

ME+EM Tie Neck Blouse Silk Satin

Tie Neck Blouse Silk Satin

ME+EM Tie Neck Blouse Silk Satin

Now 30% Off

For leggings, go to...Spanx (of course)

traitors high street brands
BBC

Spanx Scuba Legging

Scuba Legging

Spanx Scuba Legging

Now 70% Off

For accessories and Fair Isle knits, go to...Brora

traitors high street brands
BBC

You can guarantee Brora will appear multiple times in every series, whether it’s the fabulous wool coats (we’ve seen two in series four alone), the Fair Isle knits or, of course, the cosy beanies and fingerless gloves. This is another brand that’s worth checking out at sale time and shopping ahead, as the pieces don’t change much season to season and you can get good discounts.

Sinead McKeefry also often works with the Brora, curating her favourite pieces from the collections, so this is one brand that will always make it into the edit.

Brora Wool Fair Isle Tank

Wool Fair Isle Tank

Brora Wool Fair Isle Tank

Now 39% Off

Brora Cashmere Folk Wristwarmers

Cashmere Folk Wristwarmers

Brora Cashmere Folk Wristwarmers

For prints and co-ords, go to....Zara

claudia winkleman sleep in makeup skin
BBC

If you ever spot a slightly-out-of-the-ordinary co-ord or print on the show, chances are, it’s from Zara. Take the geometric-print culottes and pussy bow blouse combo from this series, for example – it was from the ZW Collection, Zara’s premium range.

McKeefry name-checked the high-street favourite in our interview, saying she often snaps up pieces to pair with designer buys, and she also featured a brown coat from the brand inCelebrity Traitors. We think it’s a great option for those check wide-leg trousers Claude loves so much, too.

Zara ZW Collection Check Trousers

ZW Collection Check Trousers

Zara ZW Collection Check Trousers

Zara ZW Collection Check Midi Skirt

ZW Collection Check Midi Skirt

Zara ZW Collection Check Midi Skirt