Sienna Miller, 42, glows in a fresh-faced selfie as her facialist reveals the secrets behind her stunning looks

Sienna Miller glowed in a fresh-faced selfie shared to Instagram on Wednesday as the secrets to looking incredible at 42 were revealed by her facialist.

The British actress showed off her flawless skin as she puckered up next to dermatologist Shane Cooper.

Shane captioned the images: 'Adore @siennathing. As a long-term client, it’s always nice to catch up whilst she has her regular session.

'Today she had the exclusive facial including the neck and décolletage, just look at her glow after the treatment! 

'Sienna has the @shanecooperskincare at home to maintain that glow.'

Sienna Miller glowed in a fresh-faced selfie shared to Instagram on Wednesday as her secrets to looking incredible at 42 are revealed by her facialist

Sienna Miller glowed in a fresh-faced selfie shared to Instagram on Wednesday as her secrets to looking incredible at 42 are revealed by her facialist

The British actress flaunted her flawless skin as she puckered up next to dermatologist Shane Cooper

The British actress flaunted her flawless skin as she puckered up next to dermatologist Shane Cooper

Shane's clinic is based in South Kensington, London, and he has also treated the likes of Maya Jama and Phoebe Dynevor.  

The 90-minute treatment he gave Sienna used CO2 micro-bubbles, micro-currents, and tri-polar radio-frequency which all work to promote collagen production, tighten skin, and reduce the appearance of wrinkles.

The treatment includes LED phototherapy, to promote maximum cell activation, and lymphatic drainage, which work both to combat a variety of skin issues from hyperpigmentation to sun damage.

Mother-of-two Sienna has had a fun filled July, and enjoyed a laugh in the Royal Box with her boyfriend Oli Green.

Sienna and the Los Angeles-based actor Oli, 27, who is the father of her second daughter, a baby girl, 7 months, sat courtside.

The unconventional couple followed Sienna's relationship with English actor Tom Sturridge with whom Sienna shares daughter Marlow, 12.

Sienna also had an on-off relationship with another English actor, Jude Law, from 2004 to 2011, famously marred by his affair with his children's nanny. 

In June, Sienna admitted that she initially struggled with the age gap between herself and her boyfriend and 'didn't expect' their relationship to become so serious as a result. 

Sienna has barely aged a day since bursting onto the showbusiness scene in the Noughties (pictured in 2003)

Sienna has barely aged a day since bursting onto the showbusiness scene in the Noughties (pictured in 2003) 

In a June interview with Harpers Bazaar magazine, Sienna, who met her toyboy lover at a Halloween party in 2021, said: 'I didn't expect to take it seriously and then quite quickly, I fell in love.

'I wasn't like, "I'm gonna get a younger boyfriend." It was more, "F*ck! Why are you young? That's so annoying."' 

Sienna continued: 'There is a difference in the way that generation of men respect women. It's specific to him, he is very wise and well-adjusted, but I do believe it's also that generation.

'They have grown up with a slightly more level playing field. I see it in his female friends as well as in the men.'

Mother-of-two Sienna has had a fun filled July, and enjoyed a laugh in the Royal Box with her boyfriend Oli Green, 27, the father of her second daughter, 7 months

Mother-of-two Sienna has had a fun filled July, and enjoyed a laugh in the Royal Box with her boyfriend Oli Green, 27, the father of her second daughter, 7 months