Even though she missed Kylie Jenner's 29th birthday party, Stassie Karanikolaou is still keeping up with her friend.

In fact, the Better Half podcaster shared a sweet tribute to Jenner on Aug. 10, calling the Kardashians star her "forever" bestie.

Sharing a photo of the pair wearing matching white tank tops, Stassie—who was recently vacationing in Ibiza, Spain—wrote on her Instagram Story, "Happy birthday to my baby."

And proving that there was no love lost, Kylie re-shared the post from her own account, responding with four emojis of pink hearts that called back to her bash's "Princess Kitty" theme.

Indeed, the Kylie Cosmetics mogul was decked out in head-to-toe pink as she rang in her latest milestone. In photos shared on Instgram Aug. 9, she and party guests—including Kim Kardashian, Khloe Kardashian, Kendall Jenner, Hailey Bieber and Stassie's Better Half podcast co-host Victoria Villarroel—rocked attire in various shades of rose, blush and fuchsia.

Completing their Barbiecore looks with feathered boas and sparkly tiaras, the group celebrated with cocktails and sweet treats by Cory Pohlman, who created a cake shaped in the shape of a bikini-clad woman as well as a frosted, bejeweled centerpiece for the festivities.

"Happy bday eve to meeee," Kylie captioned the snapshots. "I had my dream princess kitty bday night. My heart if [sic] so full. I love my life and my friends."

But this wasn't the first time Stassie, also 29, faced speculation of a feud in her yearslong fiendship with Kylie, who she first met at a Barnes & Noble when they were in middle school. In 2021, the influencer addressed rumors that they had fallen out after Kylie was noticeably missing in photos from her own birthday bash.

“It's nuts because I'm like, ‘I've known this girl since I was literally 13,’" Stassie quipped in a Bustle interview at the time. "If you think that [because] we don't post a photo together for a month we're not friends, you’re insane."

Since then, the two have continued to remain close, with Kylie even likening Stassie to a "sister."

"She's definitely my oldest friend," the Khy founder explained during a 2023 episode of The Kardashians. "We grew up together, we've been through so much together."

For a closer look at Kylie's evolution through the years, keep reading...

Kylie attends Matrix at A Time for Heroes Celebrity Carnival just months before the Keeping up with the Kardashians series premiere. 

Kylie shows support for Selena Gomez's Kiss & Tell album by attending its release party. 

Kylie sports bangs at Wango Tango music festival in Los Angeles. 

Kylie is all smiles at the Taste Of Beverly Hills. 

Kylie attends Wango Tango festial for the second year in a row. 

Kylie attends the 2011 People's Choice Awards in Los Angeles. 

Kylie attends the 2012 Teen Choice Awards just ahead of her 15th birthday. 

Kylie shows support for pal Justin Bieber at the Justin Bieber's Believe premiere. 

King Kylie arrives at the 2014 Billboard Music Awards. 

Kylie walks the blue carpet at the 2014 Teen Choice Awards. 

Kylie is all grown up at GQ's Grammys after party in 2015. 

Kylie brings back the bangs for a night at the 2015 MTV Video Music Awards.

Suited up! Kylie sports a business casual vibe at Marie Claire's 'Fresh Faces' Party.

Kylie walks her own red carpet at her 2016 charity event with SinfulColors. 

Kylie sports a two-piece ensemble at Marie Claire's Image Maker Awards 2017. 

A year later, Kylie returned to her roots for an all-black look at the 2018 Met Gala, just months after welcoming her daughter Stormi with her now-ex Travis Scott. 

Kylie supports Travis at the premiere of Travis Scott: Look Mom I Can Fly. 

Kylie steps out in a Balmain jumpsuit at the 2019 Grammys. 

Kylie is feeling blue at the 2020 Vanity Fair Oscars Party. 

She's on the move! Kylie leaves the Parsons Awards in 2021. 

Kylie steps out at the Baby2Baby gala months after welcoming her son Aire. 

Kylie is seeing red on the 2023 Met Gala red carpet. 

Kylie uses her seltzer Sprinter as the ultimate accessory while out and about in Los Angeles. 

Kylie teased her new collection of latex dresses, donning a low-cut red gown that she would wear “to pick up my kids from school,” business meetings or “the clurb.”