You may have heard some whispers, but now we can finally confirm that the rumours are true. Actress, model and style icon Sienna Miller has collaborated with high street heroes MSto bring us our ultimate capsule wardrobe – and trust us when we say you’re going to want to wear every single piece ASAP.

　　Sienna first teamed up with MS back in September last year as she was the face of the brand, which went down a storm with items selling out almost instantly—however, this time round she has taken over in the design studio.

　　That’s right, the 42-year-old can officially add ‘fashion designer’ to her CV.

　　©MS If you’re wondering how this dream team came into action, then you’re in luck as Sienna filled us in ‘I have always had a genuine love for MS - its a brand that is part of the fabric of British life and holds special associations for so many people. To collaborate on a womenswear design project made total sense.’ We couldn’t agree more to be honest.

　　Each item in the range is inspired by the mum-of-two’s own personal wardrobe and features 33 stunning summer essentials you’ll want to wear now and for years to come. We’re talking 70s-inspired prints, vintage style dresses and easy-to-wear separates which will have you covered from summer festivals to the school run and even the red carpet (AKA walkway to our fave bar).

　　©MS Fancy getting in on the action? Sienna Miller’s new range for MS launches today and is available online and in selected stores, but with prices starting from just, £19.50, the range is predicted to sell out fast. That’s why we’ve saved you scrolling time by picking out the key buys below – you can thank us later.

　　SHOP: Sienna Miller for Marks Spencer’s 1. MS X Sienna Miller Ombre Dress

　　MSPrice:65MS

　　View offer If you’re after a versatile dress that will work for just about any occasion, look no further than this gorgeous midi dress. Featuring a sunset-style ombre effect, this fully lined frock will have you covered from lunch with the girls to a stroll to the beach bar during your holidays. We love the slash-neck detailing and strappy, low-cut back which work together to elevate the simple yet stylish frock.

　　Pros ConsPros100% viscose shell to keep you feeling cool Fully lined Adjustable self-tie back closureConsBackless style cannot be worn with a bra Only available in regular length2. MS X Sienna Miller Printed Shit

　　MSPrice:39.50MS

　　View offer We love a co-ord over here at Closer HQ, and this 70s-style stunner is going straight into our shopping cart. Crafted in 100% viscose (which is perfect for keeping cool in the heat FYI), this long-sleeve shirt is ideal for styling with matching trousers, a pair of jeans or even a denim midi skirt. Plus you could easily re-style it as a beach cover-up come holiday season.

　　Pros ConsProsMade with 100% viscose Button up detailing On-trend printConsButtons may gape on larger busts3. MS X Sienna Miller Trousers

　　MSPrice:39.50MS

　　View offer Get ready to make a statement in these power print pants. Inspired by Sienna’s vintage clothing collection, the wide leg trousers feature a seriously stylish Seventies-style print, which give us total boho-babe vibes.

　　They’re designed with a mid-rise fit, which is ideal for anyone who wants to step away from those Simon Cowell style high waisted trousers, but isn’t brave enough for a pair of hipsters (we’re still scarred from the first time). We’ll be styling ours with the matching shirt and tan sandals for an effortless off-duty look, and then switching it up to heels and a silky camisole for a summer night out.

　　Pros ConsProsMade with 100% Viscose Flattering mid-rise fit On-trend print Versatile fitConsOnly available in one, standard length4. MS X Sienna Miller Metallic Beaded Macramé Bag

　　MSPrice:49;.50MS

　　View offer In case you haven’t realised – beaded bags are kind of having a moment right now, which is why this beauty has gone straight to the top of our wish list. Not only is it handcrafted with gorgeous metallic beads, but it also features super soft leather-wrapped straps that give designer vibes without the price tag. When we saw the bag IRL we were most impressed with the fact that it is actually lined, so you can pop your bits in there without worrying about bits falling out.

　　Pros ConsProsHandcrafted with on-trend beading Fully lined Leather straps easily fit over shoulders Designer look for under £50ConsDrawstring fastening may not be suitable for everyone Doesn’t feature inner pockets5. MS X Sienna Miller Pure Cotton Printed Quilted Jacket

　　MSPrice:65MS

　　View offer If there is one standout piece from Sienna Miller’s collection for MS it has got to be this quilted jacket.

　　The retro micro-block print features a contrasting floral trim, which we’re a little obsessed with right now. Plus it is made with the softest cotton you’ll ever feel – so you’ll never want to take it off, which is ideal seeing as it is still jacket weather outside.

　　Pros ConsProsMade with 100% cotton Fully lined Can be worn again during AutumnConsCan’t easily be washed6. MS X Sienna Miller Pure Cotton Striped Shirt

　　MSPrice:35MS

　　View offer There are a few items we cannot live without: our phones, a great mascara and an impeccable cotton shirt. So trust us when we say Sienna’s take on the wardrobe classic is going to become your everyday go-to. Made with 100% for that seriously crisp finish, this striped shirt is perfect for styling with jeans, skirts or even over dresses. The best bit about this stunning shirt? It has got to be the smocked detailing on the shoulder which instantly elevates this basic buy. We’re sold.

　　Pros ConsProsMade with 100% cottonEasy-to-use button fastening Also available in pink Long sleeves can be rolled upConsRelaxed fit may not be to everyone’s taste7. MS X Sienna Miller Barrel Leg Jean

　　MSPrice:49.50MS

　　View offer No wardrobe is complete with a great pair of jeans, which is why Sienna Miller has given us the gift of dreamy denim inspired by her personal faves. This barrel cut style feature a nifty side seam which not only works wonders for the fit, giving just the right amount of ‘slouch’, but also makes the jeans look way more expensive than they are. Be warned: these seriously cool jeans are slouchy, so if you want a tighter fit then dry sizing down.

　　Pros ConsProsOn-trend shape Available in petite, regular and tall fitsConsRelaxed fit may not suit everyone’s needs Fancy getting a bit more celeb-approved clothing in your wardrobe? Weve also been loving Michelle Keegans range for Very.co.uk for those summer vibes, while Billie Faiers collection for George at ASDAhas got all of our wardrobe basics covered. Or for something a little more luxe, were turning to Victoria Beckhams recent collab with Mango - who knew your wardrobe could be such a star-studded place?

　　What sizes are stocked at Marks Spencer? While the available sizes vary between the brands stocked on the site, the core MS Collection range is available in sizes 6 to 22.

　　In addition, many styles are available in either short or long, which is great news for anyone looking for a petite or tall fit.

　　Are Marks Spencer clothes true to size? Guessing your size when ordering online can be a little tricky. However, for the most part, Marks Spencer dresses fit true to size.

　　If you’re still not convinced, check out the ‘size review’ section on the product page. This will allow you to see if that new frock is marked as ‘runs small’ or ‘runs big’.

　　Cigdem Tanrioglu is Closers Deputy Style Editor. As Closer’s resistant mid-size expert, she’s usually found scouring the high street for the best feel-good buys, or on a beach obsessing over her horoscope.