She has barely aged a day since she appeared in 1997’s Boogie Nights. 

And Heather Graham, 55, displayed her smooth complexion as she attended Sierra Club’s Trail Blazers Ball in Los Angeles, California on Wednesday evening. 

The actress, who showed off her age-defying looks wearing a radiant makeup palette, donned a glamorous ivory silk lace gown from L’AGENCE for the occasion. 

The stylish ensemble boasted a scoop neckline, spaghetti shoulder straps, and Chantilly lace insets. 

Heather toted her essentials in a black cross-body bag, featuring a gold chain strap, and swept her wavy blonde tresses to one side. 

The event presented by the nation’s largest and most influential grᴀssroots environmental organization celebrates champions of environmental solutions that mitigate the extinction and climate crises. 

Heather Graham, 55, displayed her smooth complexion as she attended Sierra Club’s Trail Blazers Ball in Los Angeles, California on Wednesday evening

The actress showed off her age-defying looks by wearing a radiant makeup palette and donned a glamorous ivory silk lace gown from L’AGENCE for the occasion

American TV presenter Bill Nye, 69, American activist Wawa Gatheru, model Quannah ChasingHorse, 22, Jessica Sarowitz, and Josh and Rebecca Tickell all received a Trail Blazers award. 

Meanwhile, Canadian actor William Shatner, 94, received the Visionary Award and English zoologist Jane Goodall, 91, received the Lifetime Achievement Award. 

Heather’s appearance at the event comes after she shared several stunning ʙικιɴι snaps to her Instagram last month. 

The Hangover star looked fit as she posed at a yoga retreat at Souk Studio in Tulum, Quintana Roo.

‘Thanks @vhopeful for going with me. ❤️,’ as she tagged pals like filmmaker Vanessa Hope and said she loved her ‘yoga life.’ 

The blonde ’90s pinup, who still looks youthful in her fifties, said she made a quick stop in Sarasota beforehand to promote a movie

‘On the way there I stopped in Sarasota to screen Chosen Family as part of a program to teach kids about filmmaking. ❤️’

She added hashtags for Sarasota Film Society and Sun Coast Technical College.

Heather looked stunning in the stylish ensemble which boasted a scoop neckline, spaghetti shoulder straps, and Chantilly lace insets

To complete her look, she toted her essentials in a black cross-body bag, featuring a gold chain strap, and swept her wavy blonde tresses to one side

The event, which was held at Skirball Cultural Center, celebrates champions of environmental solutions that mitigate the extinction and climate crises

The star was wearing the same chocolate brown string ʙικιɴι she had on in 2023 as well as 2018, proving she is great at recycling.

Fans said, ‘Still look Amazing,’ and ‘Wow congrats you look killer. Haven’t aged a day’ since 1997’s film Boogie Nights, while others called her a Barbie and said she was ‘giving off White Lotus vibes.’

Heather said one of her beauty secrets is that she sleeps between 9 and 12 hours a night.

She previously said that she doesn’t understand how people need less sleep and also spends at least one day in bed a week.

Her boyfriend John de Neufville was not seen.

The Chosen Family actress and the snowboarder were first linked in 2022, and dating outside of Hollywood has been a welcome change for Heather.

Heather’s appearance at the event comes after she shared several stunning ʙικιɴι snaps to her Instagram last month, including this skimpy chocolate two-piece

The blonde ’90s pinup, who was on vacation in Tulum, Mexico, looked nothing short of sensational in a skimpy red ʙικιɴι as she soaked up some rays on the beach

Read More Heather Graham, 55, shows off her body at a yoga retreat in Mexico as she recycles a ʙικιɴι from seven years ago

‘Of course, you want someone to understand your crazy schedule, which is different than a normal job, but I like dating someone who’s not in the business,’ Heather told People in 2023.

‘It puts it in perspective. Sometimes your job becomes so important to you, and then you realize there’s so many other things in life that are happening. It’s not all about the movie business.’

The Twin Peaks star -who previously dated Heath Ledger and Josh Lucas- shared that John considers himself ‘more of a sports guy’ and decided to dive into the rolodex of her films for the first time.

Heather quipped to the outlet: ‘Even the ones that I’m so embarrᴀssed of! But he always tells me I was great and that he is really impressed. It’s sweet.’

And although the License to Drive actress chose not to marry or have kids, she shared, ‘I don’t feel that I’m missing anything.’