Sienna Miller enjoys a stroll with boyfriend Oli Green as they bump into pregnant model Adwoa Aboah in Notting Hill

Sienna Miller and her boyfriend Oli Green bumped into model Adwoa Aboah during a stroll in Notting Hill on Wednesday.

The actress, 42, and her partner, 27, appeared in good spirits as they enjoyed the summer sunshine before chatting with their pal who was grabbing a bite to eat.

Sienna cut a casual figure in a white vest which she wore with black leggings and beige sandals.

The Anatomy Of A Scandal star let her blonde locks fall loose down her shoulders and added to her look with a pair of sunglasses.

Oli also opted for a laid back look as he sported a white long-sleeved T-shirt along with navy tracksuit bottoms and black trainers.

Sienna Miller and her boyfriend Oli Green bumped into model Adwoa Aboah during a stroll in Notting Hill on Wednesday

Sienna Miller and her boyfriend Oli Green bumped into model Adwoa Aboah during a stroll in Notting Hill on Wednesday

The actress, 42, and her partner, 27, appeared in good spirits as they enjoyed the summer sunshine before chatting with their pal who was grabbing a bite to eat

The actress, 42, and her partner, 27, appeared in good spirits as they enjoyed the summer sunshine before chatting with their pal who was grabbing a bite to eat

Sienna cut a casual figure in a white vest which she wore with black leggings and beige sandals

Sienna cut a casual figure in a white vest which she wore with black leggings and beige sandals

Sienna greeted Adwoa, who is pregnant with her first child, with a warm hug as the pair caught up.

Adwoa, 32, who is expecting her baby with U.S. skater Daniel Wheatley, wore a white printed T-shirt with matching linen trousers. 

Styling her hair into braids, the star also wore black sandals and a pair of burgundy sandals.   

Sienna and Oli welcomed their first child together, a daughter, in December 2023. 

The actress already has daughter Marlowe, 10, from her previous relationship with actor Tom Sturridge, 38.

Sienna's pregnancy was revealed during a beach holiday in August where she stepped out sporting a bump.

In December Sienna covered Vogue as she spoke for the first time about her pregnancy and revealed she was having a girl.

In incredible photos taken to accompany the interview she displayed her bare bump alongside both Marlowe and boyfriend Oli.

The Anatomy Of A Scandal star let her blonde locks fall loose down her shoulders and added to her look with a pair of sunglasses

The Anatomy Of A Scandal star let her blonde locks fall loose down her shoulders and added to her look with a pair of sunglasses

Oli also opted for a laid back look as he sported a white long-sleeved T-shirt along with navy tracksuit bottoms and black trainers

Oli also opted for a laid back look as he sported a white long-sleeved T-shirt along with navy tracksuit bottoms and black trainers

Sienna greeted Adwoa, who is pregnant with her first child, with a warm hug as the pair caught up

Sienna greeted Adwoa, who is pregnant with her first child, with a warm hug as the pair caught up

Model Adwoa, who is expecting her baby with U.S. skater Daniel Wheatley, wore a white printed T-shirt with matching linen trousers

Model Adwoa, who is expecting her baby with U.S. skater Daniel Wheatley, wore a white printed T-shirt with matching linen trousers

Styling her hair into braids, the star also wore black sandals and a pair of burgundy sandals

Styling her hair into braids, the star also wore black sandals and a pair of burgundy sandals

Sienna spoke candidly about her pregnancy and how it had been 'unplanned', but admitted she felt 'more psychologically prepared' than with her first born.

During the rare interview, Sienna said that Marlowe has been angling for a sibling for some time.

Sienna also said she'd been fighting her own prejudices about being an older mother and has to learn to stop making a joke out of it.

She told the publication: 'I'd love to get to a point where I didn't feel the need to make a joke of my being older and having a baby, to show I'm in on the joke.'

And in a video she filmed with Vogue, Sienna revealed that the pregnancy was an unplanned one.

She revealed: 'I was very fortunate. I wasn't necessarily trying to get pregnant. This happened as a total surprise and biologically was something I was able to do.'

Sienna and Oli welcomed their first child together, a daughter, in December 2023

Sienna and Oli welcomed their first child together, a daughter, in December 2023

The actress already has daughter Marlowe, 10, from her previous relationship with actor Tom Sturridge, 38

The actress already has daughter Marlowe, 10, from her previous relationship with actor Tom Sturridge, 38

Sienna's pregnancy was revealed during a beach holiday in August where she stepped out sporting a bump

Sienna's pregnancy was revealed during a beach holiday in August where she stepped out sporting a bump

Sienna spoke candidly about her pregnancy and how it had been 'unplanned', but admitted she felt 'more psychologically prepared' than with her first born

Sienna spoke candidly about her pregnancy and how it had been 'unplanned', but admitted she felt 'more psychologically prepared' than with her first born

Sienna went on to further address the stigma around pregnancy as an older woman as she has fought her own prejudices around the subject.

She added: 'I think people are comfortable with a way of living that has existed for many years, which is very misogynistic and patriarchal.

'Like me being the older woman in a partnership with a younger person or being pregnant over 40 and that that's irresponsible and poor child and it's such double standards.'

On what is different this time around, she said: 'I have expectations where I had none before. I feel much more psychologically prepared than I was with Marlowe.

'It was quite a shock, the reality. I hadn't given it the thought, I guess you can't prepare for it. In my mind I imagine it's going to be the loveliest, but I think I've forgotten.'