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Sienna Miller looked stunning in a simple white summer dress as she stepped out in West London on Thursday night for the Debute pop up shop opening party.
The actress, 44, put on a leggy display in the summer dress which she paired with black sandals and a Prada straw beach bag.
Scooping her blonde locks off her face in a casual up do, she accessorised with stylish sunglasses as she sat soaking up the sun and chatting with guests.
Sienna was joined by Rita Ora‘s sister Elena who wowed in a plunging black lace dress.
She paired the racy number with white heels and a matching lace bag.
The event marked Sienna’s second outing of the week after she led the stars at the Serpentine Gallery Summer Party on Tuesday.
New mum Sienna Miller put on a leggy display in a white summer dress as she joined Elena Ora at a London pop up shop event on Thursday night
The actress, 44, paired her summer ensemble with black sandals and a Prada straw beach bag
She made the slightly bizarre decision to wear a huge, fur-lined coat over a silk dress – despite scorching London temperatures reaching almost 40C (104F) this week.
She styled it out however with strappy heels and a matching gold bag as she posed just six weeks after giving birth to her third child.
Sienna welcomed her third child in May, her second with Oli Green. They also had a daughter in January 2024.
The actress also has a daughter, Marlowe, 13, from her relationship with ex-partner Tom Sturridge.
And earlier this month Sienna’s sister confirmed that the actress is also engaged to Oli.
In an interview with Hello!, fashion designer Savannah praised 29-year-old Oli’s beautiful proposal to Sienna, who just gave birth to her third child, aged 44.
Savannah said: ‘We are all so over the moon. It’s the happiest news, and it was beautiful, the whole thing. I can’t express how happy I am for her.’
Rumours of Sienna’s engagement began last week when she stepped out with a new diamond ring on her wedding finger.
Scooping her blonde locks off her face in a casual up do, she accessorised with stylish sunglasses as she sat soaking up the sun and chatting with guests
Sienna was joined by Rita Ora’s sister Elena who wowed in a plunging black lace dress
She paired the racy number with white heels and a matching lace bag
The guests were seen chatting outside the summer boutique pop up shop Debute
Elena beamed in snaps as she posed for pictures
She made the slightly bizarre decision to wear a huge, fur-lined coat over a silk dress to the Serpentine party – despite London temperatures reaching almost 40C (104F) this week
She showed off her eye-catching jewel on a trip to Barcelona, where she was seen leaving a party only a week after giving birth.
It is the fourth time Sienna has become a fiancée, although she has never yet been married.
Friends of the couple say former model Oli has long made known his desire to marry Sienna, despite being 15 years her junior.
One said: ‘Oli and Sienna are so ridiculously in love, they’ve got a lovely family and have such a giggle together.
‘He knows what a catch Sienna is and wants to make her his wife. Hopefully it will be fourth time lucky and Sienna will make it to the aisle this time.’
Onlookers in the Spanish port city told how the actress ‘couldn’t stop smiling.’
Sienna is yet to reveal her third baby’s sex or name.
