Paris Hilton Shares Glam Highlights from Nicole Richie's 'Virgo Baby' Birthday Party

"So much fun celebrating with my Virgo Queens," Paris wrote in the caption

Paris Hilton had a great time celebrating her friend Nicole Richie!

On Sunday, Sept. 22, the socialite, 43, shared a set of glamorous photos from her former The Simple Life costar’s 43rd birthday party on Instagram.

"So much fun celebrating with my Virgo Queens @NicoleRichie & @SofiaGrainge! 🥰," Paris captioned the post. "Loves it🩷 Happy Birthday Nicole!✨🎂✨#VirgoFest ♍️ #SlivingMoms 🔥🔥🔥."

The first photo showed Nicole with her arms around Paris and her sister Sofia Richie Grainge. The trio were posing and looking into the camera as they wore "Virgo Baby" headbands.

For the occasion, Nicole rocked an elegant bronze silk dress with a V-neckline, while Sofia, 26, sported an oversized plaid high-neck blouse and black bottoms. Paris, meanwhile, looked chic in a mesh midi dress with sleeves and velvet details.

The carousel continued with a sepia-filtered snap of Nicole looking over her shoulder into the camera while Paris stood behind her talking to other guests, followed by a larger group photo in which the two were joined by stylists Jamie Mizrahi and Liat Baruch.

Paris also included two snaps of herself and Sofia with matching smiles, a few outtakes of the group snap and a candid shot of herself and Sofia, in which the "Stars Are Blind" singer is looking at her friend with a huge grin.

Sofia commented on the post, "Love you so much sis !!!😍🫶🏼🤍🤎."

Paris’ mom, Kathy Hilton, shared her birthday well-wishes for Nicole with a string of emojis: "❤️❤️❤️❤️👏👏👏👏👏💝🎂🎂🎂💝🥰🥰🥰🥰😘😘😘😘."

On Nicole's actual birthday, Sept. 21, Paris shared a sweet Instagram video that paid homage to their longtime friendship. "Nicole and I are having so much fun together," Paris said in a voiceover in the clip. "It feels like we’re teenagers again every time that we’re together. It’s just laughing every second. Happy Birthday Bill, Love Sill."

The montage contained clips from their reality show The Simple Life — which aired from 2003 to 2007 — along with newer footage. The throwback segments included shots of Paris and Nicole dressed up as Sonic mascots, which contrasted with newer clips of them toasting with a pair of Sonic drinks while standing on a sidewalk.

The businesswoman and musician captioned the post, "Happy Birthday to the Bill to my Sill, @NicoleRichie! 👯‍♀️🎉👑 So many unforgettable memories together 🥹 Can’t wait everyone to see what we’re up to next 😉🥰✨ Love you, sis! 💖 #Sanasa."

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In August, the pair were photographed in extravagant gowns while filming a reunion episode of The Simple Life reboot in Beverly Hills, Calif. During the shoot, Paris wore a matte black corset dress with a low neckline and voluminous skirt, which she accessorized with opera gloves and blinged-out sunglasses and a diamond necklace.

Meanwhile, Nicole opted for a sleeker option — a floor-length halter dress with a sexy keyhole slit — but wore shades like Paris. The two showed off their glam looks in front of the Saban Theatre with a sign reading, "Paris & Nicole the Encore."

Related: Paris Hilton and Nicole Richie's Friendship Timeline: From Childhood Pals to Simple Life Costars

Earlier this year, Lionel Richie talked about his daughter Nicole and Paris' return to reality TV and their influence on each other. "They're older but they haven't changed, trust me. Let me tell you something, those two scare me just standing next to each other," he said.

Lionel recalled the shock he felt while following Nicole and Paris' antics during their Simple Life years, saying, "When they first started doing things like driving down the freeway backwards and I kept saying, 'What are you guys doing?' [Nicole would say], 'It's reality television, Dad!' And now these two are back together. Oh my god, world, hang on to your seat!"

But expressing his support, Lionel added, "I'm very happy for both of them."

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