From Miranda Kerr's green tea steam to the Duchess of Cambridge's rose hip oil and Josephine Skriver's sleep regime: The methods used by the A list to achieve a flawless complexion

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Spray tans, facials and even seaweed wraps, there are endless weird and wonderful treatments for celebrities to splash the cash on in a bid to achieve red-carpet ready skin.

However, new studies reveal that something as simple as a good night's sleep can be enough to achieve a glowing complexion for A-listers to envy. 

Skincare brand Elizabeth Arden claim that sleep deprivation increases signs of aging, creating a stress cycle in which the stress of the day compromises the skin's opportunity to recover from the physical effects of stress at night.

As Elizabeth Arden reveals that the secret to Hollywood skin could be down to as little as a good night's sleep we reveal the other secret skin regimes celebrities use ahead of the red-carpet

So in order to avoid fine lines and under-eye bags experts recommend getting enough shut-eye to allow the skin to replenish and rejuvenate itself.

But don't just take their words for it, plenty of celebs swear by sleep and other simple tricks to encourage a plump and glowing visage. 

From the Victoria's Secret models who can't be without their beauty sleep to the Hollywood stars replacing skincare with vinegar we reveal the insider secrets to a red carpet complexion. 

Josephine Skriver's sleep regime 

The Danish Victoria's Secret model has recently been announced as the new face of Australian clothing label Kookai and spending so much time on camera knows a thing or two about keeping her skin in tact.

Speaking to Daily Mail Australia, she revealed that she relies on a her beauty sleep: 'To be honest, whether I have a shoot or not I just try to live the healthiest life style I possibly can.

Josephine Skiver revealed that she relies mainly on a good night's sleep when it comes to getting photo ready

According to Elizabeth Arden the Danish model is right to put sleep at the top of her beauty regime as neglecting it can accelerate signs of aging 

'I am very active, I try to always get a good amount of sleep, and I eat very well (though like everyone else, I love some Ben and Jerry's Ice Cream every now and then).'

Experts at Elizabeth Arden have revealed that sleep is something that more young women need to take into consideration as a bad night's sleep compromises the skin's natural ability to repair and regenerate, accelerating the appearance of signs of aging. 

Elizabeth Arden Flawless Future Powered by Ceramide™ Night Cream a powerful skin brightener that work together to smooth, nourish, and revitalize skin’s appearance $78 

Their Elizabeth Arden Flawless Future Powered by Ceramide™ Night Cream ($78) is a powerful skin brightener that work together to smooth, nourish, and revitalize skin’s appearance during your night's sleep.

'We created the Flawless Future line to address that skin aging is not solely a chronologically triggered event, but also instigated by the stress of today's hectic lifestyles,' says Aurelie Felix, Senior Scientist and Manager of Research & Development, Elizabeth Arden. 

'Stress doesn't stop when the day is over, and a deeper look revealed the significant correlation between stress, sleep and aging signs. This new perspective on skin-fatigue prompted the need for a 24/7 anti-stress skincare regimen and the introduction of a night cream to the Flawless Future product family.'

Elle Macpherson's daily scrub down

Three litres of water a day has helped to keep Elle's skin looking plump, but so has her love of exfoliation.

She told the Daily Star: 'I exfoliate from top to toe including my face and neck, then apply loads of moisturiser.

As well as drinking plenty of water Elle Macpherson is a big fan of exfoliating when it comes to skin care 

'My three beauty secrets are: exfoliation, exfoliation, exfoliation - increasing circulation ridding the body of dead skin cells, nourishing and renewing.'

Elle is also keen to protect her skin from harmful sunlight and always wears a cowboy hat while in the sunshine, as well as sun cream.

Miranda Kerr's green tea facials

The Australian model is well known for her unique beauty tricks, with one of her favourite skincare tips involving the using green tea.

In her June newsletter for her skincare range, she revealed one of her secrets to maintaining healthy, glowing skin is to steam her face with the tea.

Following her cleansing ritual Miranda Kerr gives herself a green tea steam bath 

The 32-year-old explained that after cleansing she added a green tea bag to boiling water and steams her face in a DIY steam bath.

She wrote: 'Fill your basin with a jug of freshly boiled water, add an organic green tea bag to the water, place your head over the basin and cover with a large towel… let the steam envelope your face for a few minutes to open your pores.'

The Duchess of Cambridge's right royal rosehip oil

During her pregnancy with her second child, Princess Charlotte, Kate was said to have become rather addicted to the natural oil.

According to US Weekly, Kate slathered Trilogy's Rosehip Oil onto her skin while carrying the second royal baby.

During her pregnancy with her second child, Princess Charlotte, Kate was said to have become rather addicted to the natural rosehip oil

'Kate is very cautious of products and treatments,' a source told the magazine. 'Baby's health comes first.

'Kate continues to use rosehip oil in her daily skincare regiment. She loves the effect is has on her skin. [Her mother] Carole [Middleton] is also a fan.'

Derived from the wild rose bushes that grow high in the Chilean Andes, where the altitude and pollutant-free environment produce the highest quality rosehips, the oil’s benefits have been known by the indigenous population for hundreds of years.

Not only is it rich in vitamin C and high in omega 3 and 6 fatty acids, known to heal scar tissue, it’s also a great source of retinoic acid, which studies show reduces the appearance of wrinkles and brightens skin.

Kate Moss' cooling cucumber skin solution

As someone who likes the odd cigarette and night out on the town, many are left wondering how does Kate Moss maintain such a glowing visage? 

Kate Moss has revealed that she submerges her face into a sinkful of iced cucumber water in the morning to perk up her skin

The supermodel submerges her face into a sinkful of iced cucumber water in the morning to perk up her skin.

'If I wake up looking tired and puffy, I fill a sink with ice and cucumber and submerge my face.

'It tightens everything making you look and feel instantly awake. It is a bit Joan Crawford - but it works!,' she told Stylist magazine.

Cucumber and the skin share the same level of hydrogen, so the fruit can easily help to cure problem areas. 

Eva Mendes' night time skin ritual 

Last November Hollywood stars Eva Mendes and Ryan Gosling welcomed their baby daughter Esmeralda into the world.

Since becoming a mother the actress has admitted that her looks are no longer a high priority 

New mum Eva Mendes reveals that the only time she has to pamper herself is during the night after her daughter is sleeping where she sets aside time for her skin care ritual

She told Red magazine: 'Being a mum has meant my beauty routine is down to a minimum.'

Although she has barely any time for some pampering, the actress does try to set aside at least a few minutes for her evening skincare regime , which she admits now takes place in the middle of the night. 

She added: I find it grounding to have a ritual.

'It’s just now it might happen at 3am or the minute my daughter falls asleep for a nap.'

Experts developing the Elizabeth Arden Flawless Future Powered by Ceramide™ Night Cream say that develop ping having skincare routine in evening like Eva is the most beneficial time for your skin to replenish.

They say: 'Typically, skin is most receptive at night, making nighttime the optimal time frame for a topical skincare product.'

Lupita Nyong'o avocado moisturiser  

Meanwhile, 12 Years A Slave actress Lupita Nyong'o combats her dry skin with oily vegetables.

Lupita Nyong'o swears by avocado oil  to ease the signs of dry skin 

She told Harper's Bazaar last year: 'Avocado oil is a big thing for me. I discovered it last year, and at first I was using it just on my body, but then I realised it works on my face, and my hair too, for that matter!

'Especially in the wintertime, when my skin is drier, it really seeps in and leaves it nice and lush.'

Scarlett Johansson's cider vinegar toner 

Scarlett Johansson is famed for her china doll skin and plump red lips.

And while the actress can afford to splurge on a plethora of skincare treatments, the A-lister has been guarding a rather cheap and unusual beauty secret.

Scarlett Johansson uses cider vinegar in place of a facial toner claiming it can be harsh but effective

The Avengers star has revealed that she uses apple cider vinegar as a cleanser.

The 30-year-old slathers the natural product across her face to keep her spots at bay.

While the actress did admit that the product can be harsh on skin, it has actually been effective in treating her spots.

Speaking to Contactmusic about her beauty secrets, she revealed: 'I researched natural skincare and found that apple cider vinegar is really effective.

'Using it as a toner can be harsh, but if you have breakouts it can be really healing.

'It's a little bit stinky but if you're not sleeping over at your boyfriend's it's really effective!,' she added. 

Catherine Zeta-Jones all natural skin softening treatment

Catherine Zeta- Jones is happy to use her own homegrown beauty secrets, such as rubbing honey and salt on her skin to beat wrinkles.

In an interview with Now Magazine back in 2009, the actress admitted that the answer to preserving her youthful appearance lies as much in her kitchen as her make-up bag.

Catherine Zeta-Jones rubs salt and honey on her skin to moisturise and exfoliate

'I rub a mixture of honey and salt all over my body to moisturise and exfoliate,' she said.

'You wash it off and your skin is gorgeous. Also, I love to eat an apple after a meal, just to cleanse my teeth - they always look polished afterwards.'  

Khloe Kardashian's coconut oil conditioning mask

Contouring may be Kardashian's most famed beauty method, however she admits that all natural products also take pride of place Khloe's makeup bag.

Khloe Kardashian swears by coconut oil she uses it over a makeup remover and says its amazing for the hair

Rather than resorting to harsh makeup wipes the business woman uses natural based oils to cleanse her face.  

'When I take off my make-up, I use avocado oil or coconut oil and I also sleep in it, it's amazing for dry hair,' explained Khloe. 'You can put it on your body, too. Coconut oil can do everything.' 

Halle Berry's coffee bean exfoliant  

Cellulite is something that plagues many women's life but Bond girl Halle Berry has found a way to beat lumpy, bumpy skin without having to go under the knife or resort to laser treatment. 

Halle makes her own scrubs by mixing ground coffee and body wash. The star thinks it promotes healthy blood flow and silky smooth skin

Cosmopolitan revealed that Halle makes her own scrubs by mixing ground coffee and body wash.

The star thinks it promotes healthy blood flow and silky smooth skin.

Harry Styles' sheep placenta facials  

According to Grazia in order to maintain his youthful glow, One Direction heartthrob Harry Styles reportedly goes books in for £325 sheep placenta facials in a clinic in LA every six weeks.

ne Direction heartthrob Harry Styles reportedly goes books in for £325 sheep placenta facials in a clinic in LA every six weeks which help to cleanse the skin and open pores

The unusual treatment involves taking the placenta from the New Zealand livestock - the stem cells, which are full of rich nutrients that fight free-radical skin damage, are extracted and then flash frozen.

They are then mixed into a gel containing gold flecks which are slathered over the face after it has been exfoliated, exposed to steam and had pores opened by LED light from a handheld device.

The Beckhams' bird poo facials 

This therapy involves mixing excrement from a nightingale, collected from the Japanese island of Kyushu, with rice bran and water which is then applied as a face mask. 

Both Victoria and David Beckham have reportedly had bird poo facials which involves mixing excrement from a nightingale

According to Now both Victoria and David are said to have given the treatment a go which is said  to act as an exfoliant which unclogs pores and aids shine.  

Mila Kunis' precious stones facial  

Jupiter Ascending actress Mila Kunis, 31, has decided to fight the signs of ageing with expensive jewels.

According to reports, Ashton Kutcher's partner booked in for a £4,200 diamond and ruby facial ahead of the Golden Globes in 2014.  

The procedure involves precious stones being rubbed over her skin. The jewels are said to act as antioxidants and leave the patient with a 'lustrous sheen'. 

According to reports, Mila Kunis booked in for a £4,200 diamond and ruby facial ahead of the Golden Globes