Paris Hilton, Britney Spears and Lindsay Lohan are hardly living "The Simple Life" nearly two decades after taking Hollywood by storm as a powerful partying trio.

Hilton, 42, shared the ultimate throwback photo with her millions of followers Monday of the pop princess and "Mean Girls" actress hopping into her car following a night out in Los Angeles and wrote, "17 years ago... History was made. The ‘Holy Trinity.'"

The bond between Hilton, Spears and Lohan has grown stronger through the years, especially now with their shared experiences with motherhood. 

PARIS HILTON'S THANKSGIVING SURPRISE: STAR WELCOMES BABY GIRL LESS THAN A YEAR AFTER ARRIVAL OF SON

Paris Hilton, Britney Spears and Lindsay Lohan smile

Paris Hilton celebrated the "Holy Trinity" with her friends Britney Spears, center, and Lindsay Lohan, right. (Getty Images)

Spears was already a mother to two children when the fateful outing occurred. She had filed for divorce from ex-husband Kevin Federline only two weeks before the group was pictured leaving together in Hilton's car.

Hilton also shared a Bratz dolls mock-up of the legendary image, with the brand commenting under her photo: "Theeee definition of iconic!!!"

During the 2000s, the trio's frequent nights outs were heavily publicized, but Spears confessed in her book, "The Woman in Me," that partying "was never as wild as the press made it out to be."

Paris Hilton laughs with Britney Spears and Lindsay Lohan

Paris Hilton, right, shared a throwback snap from 2006 with Britney Spears and Lindsay Lohan, left. (MEGA)

APP USERS CLICK HERE TO VIEW POST

For her part, Hilton recently announced the surprise birth of her daughter London over the Thanksgiving holiday.

Earlier this year, Hilton revealed she and husband Carter Reum welcomed a son, Phoenix Barron Hilton Reum, into the world via surrogate.

"I'm loving my mom era," she told Hoda Kotb and Jenna Bush Hager on the "Today" show Monday. "I feel just so at peace, just so happy, just so grateful for my husband and this beautiful life that we're building together. I couldn't imagine anything else. I'm just over the moon with everything."

Paris Hilton appears on The View and walks red carpet in 2006

Paris Hilton was a reality star and budding musician in 2006. (Getty Images)

Paris Hilton smiles while holding a puppy who wore a pink hair bow

Paris was in the midst of "The Simple Life" fame in 2006. (M. Caulfield)

During an appearance on "Live with Kelly & Mark," Hilton said she planned to have her kids so that they were close in age to each other.

LEANN RIMES COMPARES BRITNEY SPEARS' STORY TO HER OWN ‘SOUL-SUCKING’ EXPERIENCE IN MUSIC INDUSTRY

"I'm hoping they're just one grade apart because I want the big brother to be watching over the little sister in school – that was the plan," Hilton said before adding, "I'm in heaven. I just feel like my life is so complete."

Hilton detailed how she surprised her family shortly after Thanksgiving dinner when she casually walked into the room carrying her daughter in a pink blanket. "Everybody was like, ‘What!,’" Hilton said before admitting everyone burst into tears.

Britney Spears laughs on David Letterman Show

Britney Spears revealed she was pregnant with her second child in May 2006, and she gave birth to son Jayden in September. (CBS Archives)

LIKE WHAT YOU’RE READING? CLICK HERE FOR MORE ENTERTAINMENT NEWS

"We were at the wrong Thanksgiving," Kelly Ripa jokingly told her husband.

"Everyone was just … they couldn't believe it," Hilton said. "It was the best Thanksgiving I've ever had in my life."

She may soon introduce her little girl to longtime friend Spears, too. While reflecting on the throwback, Kotb mentioned how cute it was to see Spears and Hilton together again and asked if the girls kept in touch.

"We were actually speaking a couple days ago and planning a girls' night, so she's going to come over," HIlton said. "And I'm just so proud of her. Her book was so incredible, and she's just so brave for coming out and telling her story, and it's really amazing to see so many people doing that right now and really opening up and being real."

Britney Spears seen in 2006 and 2018

By the end of 2006, Britney Spears had two children and was in the process of divorcing Kevin Federline. (Getty Images)

Spears gave insight into her life as one of the most coveted pop stars of all time in her memoir, "The Woman in Me," which was released in October. She detailed growing up as a child actress, suffering a brutal break-up with ex Justin Timberlake and the controversial conservatorship where her father, Jamie Spears, controlled her personal and financial matters for 13 years.

BRITNEY SPEARS, LINDSAY LOHAN, ZACHERY TY BRYAN: CHILD STARS WHO WENT FROM HOLLYWOOD TO HANDCUFFS

The "Piece of Me" singer is celebrating her freedom now, too. She is in the process of divorcing estranged husband Sam Asghari months after he filed for divorce. 

Spears and Federline married in October 2004 after dating for nearly 10 months. During their three-year relationship, they had sons Jayden James and Sean Preston. Their divorce was finalized in July 2007.

Hilton released her own, self-titled book in March, when she divulged living with PTSD from abuse suffered at boarding school as a teen, to turning down posing in "Playboy" and more.

Lindsay Lohan attends fashion show wearing fiery red dress

Lindsay Lohan already had a string of films under her belt in 2006, including the 2004 hit "Mean Girls." (Astrid Stawiarz)

"I am just always thinking about one day when my kids are teenagers, just how, that's a scary thing," she told Hager and Kotb about her memoir. Kotb asked, "You decided, 'I'm going to say it out loud.' Life is about telling the truth. Is that something you're trying to impart?"

CLICK HERE TO SIGN UP FOR THE ENTERTAINMENT NEWSLETTER

"It's definitely something that's very important, and just not holding on to shame that shouldn't be on you," Hilton said. "It should be on the people that hurt you. The No. 1 rule in our house is just to have kind human beings, so that's what we're raising them to be."

Lohan, 37, announced earlier this year that she, too, was joining the mom club, and was pregnant with her first child with new husband Bader Shammas. In 2014, Lohan left the United States and relocated full-time to Dubai. She turned her focus to entrepreneurship and opened three beach clubs in Greece, and she starred in the MTV reality series "Lindsay Lohan's Beach Club."

Lindsay Lohan walks red carpet, pictured in 2023

Lindsay Lohan was a successful child actress, having starred in the "Parent Trap" remake and "Freaky Friday" before she was 18. (Getty Images)

She told Emirates Woman in 2018 that moving to Dubai afforded her "a fresh start."

"I moved here for that purpose. I don’t have to be publicly seen all the time or discuss what I’m doing," she said. "I get more work done because I don’t have the scrutiny and fixation on what I’m doing every second. I work all the time; my mind never stops."

In July, the "Parent Trap" star gave birth to a son named Luai.

CLICK HERE TO GET THE FOX NEWS APP