Stassie Karanikolaou and Kylie Jenner
Stassie Karanikolaou missed Kylie Jenner’s 29th birthday party Instagram/Stassie Karanikolaou

Kylie Jenner's 29th birthday party had no shortage of famous faces, but one glaring absence quickly became the subject of intense online speculation. Stassie Karanikolaou, Kylie's longtime best friend, was nowhere to be seen as the reality star celebrated her birthday with family and A-list pals.

Instead, Stassie appeared to be enjoying a getaway in Ibiza with Alix Earle, prompting fans to question why she had seemingly chosen a holiday over Kylie's big day. Some followers were quick to accuse her of being a 'fake friend', while others wondered whether the longtime besties had secretly fallen out.

But despite the dramatic online reaction, there is currently no confirmed evidence of a feud between Kylie and Stassie. In fact, several clues suggest the pair remain as close as ever.

Stassie Misses Kylie's Star-Studded Birthday

Kylie celebrated turning 29 with a lavish 'Princess Kitty' themed birthday party attended by several members of the Kardashian-Jenner inner circle.

Kim Kardashian, Khloé Kardashian and Kendall Jenner were among the family members who joined the celebrations, while Hailey Bieber, Victoria Villarroel and Devon Lee Carlson were also part of the glamorous guest list.

Yet Stassie was noticeably absent. The omission stood out because she has been one of Kylie's closest friends for years and has frequently appeared alongside the beauty mogul at major events, holidays and celebrations.

With Stassie seemingly busy in Ibiza with Alix, fans immediately began asking questions about the status of the friendship.

One follower commented: 'U should be at your best friend's birthday party.' Another wrote: 'You're not in Kylie's birthday whyyyy😭😭😭.'

Some took the speculation even further, accusing Stassie of being a 'fake friend'.

Ibiza Trip Fuels the Speculation

Stassie's holiday plans made the timing of her absence particularly noticeable. Rather than being unable to attend because of work commitments or another public obligation, she appeared to be enjoying a sunny European getaway with influencer Alix Earle.

That was enough for some social media users to begin wondering whether Stassie's increasingly visible friendship with Alix had created tension with Kylie. However, there is no public evidence that the two friendships are connected or that Kylie was unhappy about Stassie missing her birthday.

The theory is driven largely by the fact that fans are accustomed to seeing Kylie and Stassie together. When a friendship is followed so closely online, even a relatively ordinary decision can quickly become the subject of intense scrutiny.

There Is Little Evidence of a Fallout

Despite the rumours, the available evidence currently points away from a major friendship breakdown. A source cited by DeuxMoi reportedly said there was 'no known fallout' between Kylie and Stassie, adding that the pair had travelled together as recently as the previous month.

That recent trip is significant because it suggests the friendship was still intact shortly before Kylie's birthday. There has also been no public statement from either woman confirming a disagreement, feud or falling-out.

Instead, Stassie appears to have made her feelings towards Kylie very clear on social media.

Stassie's Sweet Birthday Message

Perhaps the biggest clue that there may be no drama came directly from Stassie herself.

Although she missed the birthday party, she still commented on Kylie's Instagram post with an affectionate message.

'Perfect girl, I love you forever,' Stassie wrote.

The public declaration is difficult to square with claims that the pair have had a serious falling-out.

While social media comments cannot reveal everything happening behind closed doors, Stassie choosing to celebrate Kylie on her birthday publicly appears to undermine the idea that she was deliberately snubbing her.

The pair also continue to follow each other on Instagram.

Why Fans Were So Quick To Cry 'Fake Friend'

The reaction highlights just how closely fans follow Kylie and Stassie's friendship. The pair have been close for years, and Stassie has become a familiar presence around Kylie and the wider Kardashian-Jenner circle.

As a result, her absence from such a high-profile celebration was always likely to attract attention. Add in a glamorous Ibiza trip with another famous friend, and it is easy to see how speculation gained momentum.

But there is an important distinction between fan theories and confirmed information.

At present, there is no public confirmation that Kylie Jenner and Stassie Karanikolaou are feuding. For now, the evidence suggests Stassie simply happened to be elsewhere when Kylie celebrated her 29th birthday.

And while fans may have been quick to cry 'fake friend', Stassie's own words appear to tell a very different story: 'Perfect girl, I love you forever'.