Olivia Wilde exuded effortless style at a private dinner hosted by W Magazine in California on Friday, sharing the evening with Dakota Fanning and Addison Rae.

The 41-year-old actress showcased her fashion-forward sensibilities by pairing a lace vest with a black cropped jacket over a white silk top.

Her ensemble was perfectly rounded off with a long black skirt and chunky heeled boots, adding a touch of sophistication to her look.

Meanwhile, Dakota Fanning, 31, opted for simplicity and elegance in a white lace dress that she wore over black tights.

Addison Rae, 25, made a striking appearance in a satin and lace dress, accentuated by a large bow that cinched her waist, highlighting her legs.

To complete her captivating outfit, she stepped into chic white slip-on heels and carried a small leather handbag, pulling her look together with flair.

Olivia Wilde, 41, (pictured) looked effortlessly chic in a lace vest as she joined Dakota Fanning and Addison Rae at an intimate dinner hosted by W Magazine in California on Friday

Dakota, 31, (left) attended the event in a simple white lace dress layered over black tights while Addison, 25, (right) put on a very leggy display in a satin and white lace dress

Olivia has been enjoying a series of low-key dates with art dealer Caspar Jopling, 33, since July, after he split from singer Ellie Goulding in 2024 after five years of marriage.

Last month, Olivia and Caspar enjoyed their first public outing together as they attended W Magazine’s New York Fashion Week party.

Just a week earlier, the couple spent three hours having a meal and drinking red wine at The Pelican restaurant in the west London enclave before their passionate embrace outside the venue.

Sources said Caspar, who split from Ellie, 38, after nearly five years of marriage last year, is an investor in the restaurant and its nearby sister pub, The Fat Badger, allowing him to date Olivia in relative privacy.

The source told The Mail On Sunday: ‘Those pubs have allowed Caspar to date a world-famous actress under the radar for months.

‘They always manage to get the best tables – little concealed spots in dark corners reserved for celebrities.

‘They tend to go to The Fat Badger for date nights because it’s an invitation-only pub, with a secret smoking terrace upstairs.’

‘Caspar’s friends think they are falling in love. Now they are ready to be open about their relationship so you can expect to see them out and about together more often.’

Olivia toted around her belongings in a small brown leather handbag and accessorised with a gold chain necklace

Dakota (pictured with her sister Elle Fanning) added inches to her petite frame as she slipped into a pair of towering black platform heels

Addison completed her sizzling display with a pair of elegant, white slip-on heels and carried a small black leather handbag

Elle stepped out in a pink silk dress which featured dramatic puff sleves and a lace lining 

Nicole Richie showcased her statuesque phsique in an akle-length dress which she paired with towering brown platform heels 

Natalia Bryant wore a long black lace dress, which featured fanned sleeves, to the star-studded event 

Maya Rudolph opted to wear a red lace dress which featured a unique layered design

Ari Fournier cut a more relaxed display in a grey loose fitting dress which she paired with thigh-high black boots and a maroon leather bag

Lexi Jayde wore a black and while polka dot dress to the event and completed her look with brown high-high boots and a brown leather bag

After the star-studded event, Dakota appeared to be in top spirits as she left the dinner with a big smile

Notting Hill was also where Ellie was seen on a date with her new boyfriend, 28-year-old American actor Beau Minniear, who is ten years her junior.

Olivia previously dated pop star Harry Styles after breaking off her seven-year engagement to Ted Lasso star Jason Sudeikis, with whom she has two children.

Born in Yorkshire and educated at Eton, Caspar’s father is the Honourable Nicholas Jopling, whose own father is politician Thomas Michael Jopling, a member of the House of Lords.

His uncle, who no doubt inspired his career, is renowned art dealer Jay Jopling who runs online art platform Paddle 8, where Caspar’s pal Princess Eugenie worked in New York, before moving back to London.

Jay was previously married to director Sam Taylor Johnson, with whom he shares daughters Jessie, 18, and Angelica, 27.

Caspar’s parents divorced and his mother Jayne Warde-Aldam went on to wed Charles Andrew Warde-Aldam.