Sydney Sweeney brought along her rarely-seen younger brother as her date to the European premiere of Echo Valley and following afterparty at London’s BFI Southbank on Tuesday night.

The actress, 27, oozed Hollywood glamour at the premiere in a halterneck baby blue gown, with a flowing tulle train, before undergoing a wardrobe change for the celebratory bash afterwards.

She slipped into a satin Miu Miu champagne-coloured dress, that clung to her incredible figure and displayed her ample cleavage.

While her little brother Trent showed his pride for his sister as they posed for snaps together, cutting a trendy figure in a leather blazer, black trousers and aviator shades.

The siblings were joined by Trent’s girlfriend, Samayre Soto – with the couple looking utterly smitten as he planted a kiss on her cheek.

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Sydney Sweeney brought along her rarely-seen younger brother as her date to the European premiere of Echo Valley and following afterparty at London’s BFI Southbank on Tuesday night

The actress, 27, oozed Hollywood glamour at the premiere in a halterneck baby blue gown, with a flowing tulle train, before undergoing a wardrobe change for the celebratory bash afterwards

She slipped into a satin Miu Miu champagne-coloured dress, that clung to her incredible figure and displayed her ample cleavage

Samayre looked effortlessly edgy for the event in a black corsetted satin dress, exposing her toned midriff and impressive collection of tattoos.

Trent is Sydney’s sole sibling and enjoys a life away from the limelight, with him rarely making appearances on red carpets.

However, the brother-and-sister have frequently shown their very strong bond, with both taking to Instagram to share their support for each other.

In 2020, Sydney touched on their relationship, as she discussed whether it was similar to the sibling rivalry depicted in her film Nocturne.

She admitted: ‘Not so much the competitive side, but I roughed him up and tried to push him to do more.’

After a few minor acting gigs in his childhood, Trent ultimately opted not to follow in his sister’s footsteps.

In 2020, he began military training for the United States Air Force, with Sydney showing her support at the time on Instagram with a slew of throwback photos of the pair as kids.

In a sweet tribute, she captioned the post: ‘My little bro leaves for basic training tomorrow. wishing you luck bud ❤️ when the going gets tough just remember your sister is tougher than you.’

While her little brother Trent showed his pride for his sister as they posed for snaps together, cutting a trendy figure in a leather blazer, black trousers and aviator shades

The siblings were joined by Trent’s girlfriend, Samayre Soto – with the couple looking utterly smitten as he planted a kiss on her cheek

Trent is Sydney’s sole sibling and enjoys a life away from the limelight, with him rarely making appearances on red carpets

The brother-and-sister have frequently shown their very strong bond, with both taking to Instagram to share their support for each other (seen with their mother)

While Trent has also shown his support for Sydney from the start of her huge Hollywood career, previously taking to his Instagram to promote her Netflix series Everything Sucks! and protest its cancellation.

While in 2019, he shared a throwback selfie of the pair together to voice his pride at her Screen Actors Guild nomination for The Handmaid’s Tale.

He gushed: ‘I know this is an old picture and I already posted it, but I wanted to congratulate my sis @sydney_sweeney on being nominated for a SAG award and wish her the best of luck.’ 

It comes after Sydney opened up about how she and Trent had to live in a Holiday Inn for nine months after her parents were declared bankrupt.

She is now a multi-million dollar success story after making it with acting with roles in Anyone But You, The White Lotus and The Handmaid’s Tale.

But back before hitting the big time her family found themselves in hard times when her mother, Lisa, a criminal defence lawyer, and her father who worked in hospitality were declared bankrupt.

In 2013 when she was 16, her parents who are now divorced, sold their home in Washington, with the family of four living in a one-bedroom hotel room for months.

Speaking to The Times last week of her tough childhood, she said: ‘We lived in the Holiday Inn in Burbank [northwest LA] for eight and a half months but it felt like my entire life.

In 2020, he began military training for the United States Air Force, with Sydney showing her support at the time on Instagram with a slew of throwback photos of the pair as kids

While Trent has also shown his support for Sydney from the start of her huge Hollywood career, previously taking to his Instagram to promote her Netflix series Everything Sucks! and protest its cancellation

While in 2019, he shared a throwback selfie of the pair together to voice his pride at her Screen Actors Guild nomination for The Handmaid’s Tale

‘We were sharing a one-bedroom hotel room, no kitchen, no balcony. A pull-out sofa bed, where my dad and brother slept, my mom and me in the bed…’ 

Detailing how her and Trent coped at the time, she said: ‘My brother and I tried to make the best of it – we would joke around and say we were in The Suite Life of Zack and Cody. 

‘We’d run around the different hallways and find stairwells and make friends with all the staff and they would make us grilled cheese.’

In a far cry from her beginnings Sydney now boasts an incredible property portfolio after finding her own financial success thanks to her movie and TV work. 

She owns a £4.5million Bel Air home and another Tudor-style home in LA that is worth £3.3million.

Sydney then has a £10.2million compound in the Florida Keys as well as several back home in the Pacific Northwest.

She went on to tell The Times that she is also currently looking at places to buy in New York, Texas, Italy and London.