1 MAJE 

Maje, a ready-to-wear brand that makes French style easy for girls with celebrities like Pippa Middleton or Gigi Hadid from the U.S. To offer essentials for women in the gym, Maje has joined forces with Varley activewear label from London.

Maje x Varley’s 20-piece limited edition Maje x Varley line includes everything you need, from socks to leggings, sweatshirts and headbands, all in a unique collection. With colours including mauve, beige and black, plus leopard and faux fur, this isn’t one for wallflowers.

You can look good while showing off your green credentials by wearing a variety of pieces made with recycled polyester like the leggings that hug your figure and bras for sports.

2 MINT VEST VELVET

Mint Velvet’s second MV Active collection is a wardrobe essential for mothers who love glamour and work hard. It follows the launch of its first offering back in September.

The design is true to form. It’s a thoughtful blend of style and comfort, featuring built-in bra support, sweat-wicking fabrics, and tummy-smoothing belts. Yet bold, monochrome logos and modern racerback tops mean it’s cool enough to wear to the most yummy mummy gym class.

A standout piece is the scruffy-chic batwing sweater i n acid yellow (£49) — throw it on to run errands after spin class. What’s more? It’s made using Ecovero viscose fibres, derived f rom sustainably sourced wood pulp.

Sports bra, £39, and leggings, £49, mintvelvet.co.uk

Sports bra, £39, and leggings, £49, mintvelvet.co.uk

3. REFORM

Reformation, a sustainable brand is well-known for its modern and feminine designs with simple silhouettes.

Worn by actress Natalie Portman and model Kaia Gerber, it is both wearable and on trend — as is its activewear.

Ref Active’s last year launch featured two products: EcoMove (a fabric that provides high performance and has a subtle sheen, which is ideal for exercise with impact; and EcoStretch (a fabric that offers low-impact, velvety softness).

The stars of the collection are the ultra-modern ‘active dresses’ — like tennis whites given a sleek overhaul for the 21st century. (Try the Daria in black, forest green or mocha, £98, which features the sexy thigh-split plus built-in knickers.) This will be a popular item on social media, but it’s also available in larger sizes (up to 3XL).

Bra, £125, and leggings, £140, Roland Mouret at selfridges.com

Bra, £125, and leggings, £140, Roland Mouret at selfridges.com

4 ROLAND MOURET

The designer behind the Galaxy dress — worn by every Noughties star from Victoria Beckham to Halle Berry — launched Roland Mouret Body last October. This is seriously high-end athleisure, with eyecatching details such as a ruched, open back on a jersey tank top, or the signature ‘Mouret dart’ on leggings, perfectly placed to enhance the shape of your bottom.

Mouret is admired for his fine cutting and intricate sculptural work, which makes it easy to design a flattering, figure shaping fitness line.

On launching the range, Mouret admitted he was having to adapt to our new, more casual way of dressing, saying: ‘We have to be realistic about the women in our lives and the way they spend money today.’

Although his brand of dresses has gone into administration, the RM Body collection is still available at Selfridges as well as online store Mytheresa. With prices starting at £75, it’s still a luxe option, but you could wear these pieces out to lunch before heading to a gym. And compared with the Galaxy dress, which originally retailed for £990, they are a snip.

Jersey sports bra, £125, and high-rise stretch leggings, £155, Roland Mouret at selfridges.com

Jersey sports bra, £125, and high-rise stretch leggings, £155, Roland Mouret at selfridges.com

5 GHOST

Ghost is famed for its floaty frocks in pretty floral prints — so it stands to reason that its activewear is supersoft, comes in a range of pretty ice-cream colours and was designed with yoga, Pilates and ballet barre classes in mind.

Go by Ghost, which was released last year, features sweatshirts in organic cotton and joggers. It even includes a ditsy floral print (£89 for a sweet pink hoodie), a detail synonymous with Ghost dresses.

The line offers two kinds of leggings: the one for low-impact exercise with a flattering, yet comfortable high waist and the second for training. The line is at the affordable end of the activewear market, too, at £49 for leggings.

Strappy bra, £39, jersey joggers, £49, and organic sweatshirt, £59, ghost.co.uk

Strappy bra, £39, jersey joggers, £49, and organic sweatshirt, £59, ghost.co.uk

6 NOBODY’S CHILD 

You may have heard of this ‘ecoconscious’ brand because it recently became the first outside label stocked at Marks & Spencer. Known for pretty dresses in trendy but wearable shapes, Nobody’s Child launched its debut athleisure collection in December — also at M&S.

The 16-piece range features a few hero pieces (bright, floral print leggings in recycled polyester, very like Lululemon but far cheaper at £42), plus plain, well-made basics in block colours. The 60-piece leggings are made of plastic bottles, and sweatshirts are dyed with vegetable dye. Prices are affordable, too, peaking at £49.

Recycled polyester crop top, £22, and leggings, £42, available at nobodyschild.com and marksandspencer.com

Recycled polyester crop top, £22, and leggings, £42, available at nobodyschild.com and marksandspencer.com