Kylie Jenner spends 'best' birthday with Timothee Chalamet and shares snaps of lavish celebrations... following baby daddy Travis Scott's latest arrest drama

She celebrated her 27th birthday on Saturday with family and friends.

And Kylie Jenner revealed some behind-the-scenes looks at the festivities in an Instagram post shared with her 398 million Instagram followers on Monday.

The reality star shared photos of herself with one of her best friends, Stassie Karanikolaou, as well as her two-year-old son Aire, who got a face full of her birthday cake during her trip to the Bahamas.

The birthday celebrations came just a day after Aire's father — and Kylie's ex — Travis Scott was arrested in Paris following an alleged altercation involving a security guard and his own bodyguard.

Kylie shared her post shortly after she was spotted arriving back in the US while accompanied by her boyfriend Timothée Chalamet.

Kylie Jenner shared behind-the-scenes photos from her 27th birthday party in the Bahamas on Monday, shortly after she was seen arriving back in the US with boyfriend Timothée Chalamet ¿ whom some fans believed was seen hiding in the photo above

Kylie Jenner shared behind-the-scenes photos from her 27th birthday party in the Bahamas on Monday, shortly after she was seen arriving back in the US with boyfriend Timothée Chalamet — whom some fans believed was seen hiding in the photo above

Her BFF Stassie Karanikolaou and her two-year-old son Aire was also pictured in an adorable photo as he chowed down on her birthday cake before showcasing in a vintage Versace black dress from London-based vintage platform BARABOUX

Her BFF Stassie Karanikolaou and her two-year-old son Aire was also pictured in an adorable photo as he chowed down on her birthday cake before showcasing in a vintage Versace black dress from London-based vintage platform BARABOUX

In photos obtained by DeuxMoi, the Dune star and the Kardashians mainstay were pictured exiting Kylie's private jet.

Both opted to wear black exam-style masks, and Kylie favored a baggy white hoodie with black leggings, while Timothée wore a purple-and-white jacket with a white shirt and a black baseball cap.

The two have tried to keep their relationship under the radar, even as they have been beset by occasional rumors of a split.

While Kylie and her boyfriend were spotted heading home on Monday, eagle-eyed fans were also convinced that they had spotted him hiding in a selfie Kylie posted to her Instagram account earlier in the day.

In a post seemingly promoting the sparkling beverage Glow, Kylie shared two mirror selfies of herself wearing a vintage Versace black dress from London-based vintage platform BARABOUX.

But in the very back of the photo, a blurry figure who somewhat resembled Timothée was seen wearing a blue baseball cap and a black outfit.

Although it wasn't clear if it was the Lady Bird star, several of Kylie's fans were certain it was him in the background.

“Ha! Crumbs is all we get. Crumbs!' one fan complained in the comments, via Us Weekly

'It must be exhausting for anyone that’s invested in this relationship,' joked another exasperated fan. 

In photos obtained by DeuxMoi, the Dune star and the Kardashians mainstay were pictured exiting Kylie's private jet; pictured together at the Golden Globes in January in Beverly Hills

In photos obtained by DeuxMoi, the Dune star and the Kardashians mainstay were pictured exiting Kylie's private jet; pictured together at the Golden Globes in January in Beverly Hills

But fans also thought they spied Timothée as a blurry figure in the back of her mirror selfies on Monday. The person appeared to wear a blue baseball cap and shared a resemblance to the actor

But fans also thought they spied Timothée as a blurry figure in the back of her mirror selfies on Monday. The person appeared to wear a blue baseball cap and shared a resemblance to the actor

She kept the Call Me By Your Name star out of her birthday post, which featured a sweet photo of little Aire as he smashed his face into her birthday cake and got green icing all over his mouth and nose

She kept the Call Me By Your Name star out of her birthday post, which featured a sweet photo of little Aire as he smashed his face into her birthday cake and got green icing all over his mouth and nose

Kylie and her actor boyfriend were first linked in April of last year, but it wasn't until September that they were spotted together in public when they attended one of Beyoncé's Renaissance tour dates in Los Angeles.

Although the two were notably together and loved up at the Golden Globe Awards in January of this year, they have otherwise kept their relationship out of the spotlight, frustrating the most die-hard fans of the two.

Timothée has lately been focused on the filming of his Bob Dylan biopic A Complete Unknown.

The film, which is directed by Logan and Ford V Ferrari filmmaker James Mangold, traces Dylan's rise from a promising folk singer to a rock icon in the early to mid-1960s, also stars Elle Fanning.

The film's trailer was released late last month, and viewers praised the lead actor's performance as he emulated young Bob Dylan in a performance of his classic song A Hard Rain's a-Gonna Fall.

Kylie's post allegedly featuring Timothée in the background prominently featured a bottle of Glow, and the cosmetics mogul is a brand ambassador and investor in the product, but it didn't feature any indication that it was an ad.

She kept the Call Me By Your Name star out of her birthday post, which featured a sweet photo of little Aire as he smashed his face into her birthday cake and got green icing all over his mouth and nose.

The billionaire included a lovely photo of the rocky shore and the clear blue water in the Bahamas, along with a photo from the deck of her yacht showing a table set for her guests.

It was ready for festivities with multicolored Hawaiian leis draped over their chairs, and Kylie's name was spelled out in large balloons with the sea in the background.

The billionaire included a lovely photo of the rocky shore and the clear blue water in the Bahamas

The billionaire included a lovely photo of the rocky shore and the clear blue water in the Bahamas

A photo from the deck of her yacht showed a table set for her guests

A photo from the deck of her yacht showed a table set for her guests

The reality icon gave her fans a closeup of her impeccable pale pink nails ¿ which were of a more modest length than she usually wears. She had multicolored stones glued to the nails, and she sported multiple silver rings

The reality icon gave her fans a closeup of her impeccable pale pink nails — which were of a more modest length than she usually wears. She had multicolored stones glued to the nails, and she sported multiple silver rings

Other images included a more formal dining table covered with flowers and candles and surrounded by more arrangements

Other images included a more formal dining table covered with flowers and candles and surrounded by more arrangements

She included a closeup of a black cherry¿flavored vodka soda that she enjoyed on the beach

She included a closeup of a black cherry–flavored vodka soda that she enjoyed on the beach

She also posted a shot of the calm, rippling ocean during a gorgeous sunset

She also posted a shot of the calm, rippling ocean during a gorgeous sunset

The reality icon gave her fans a closeup of her impeccable pale pink nails — which were of a more modest length than she usually wears. 

She had multicolored stones glued to the nails, and she sported multiple silver rings.

Other images included a more formal dining table covered with flowers and candles and surrounded by more arrangements, as well as a closeup of a black cherry–flavored vodka soda that she enjoyed on the beach and a shot of the calm, rippling ocean during a gorgeous sunset. 

'best birthday ever ??' she mused in her caption. 

While Kylie was enjoying her best life, things weren't going as well for her ex Travis Scott, 33, with whom she shares both Aire and her six-year-old daughter Stormi Webster. 

The rapper was arrested in Paris during the early morning hours of Friday after allegedly getting into an altercation. 

Prior to that, he was seen attending the men's basketball semi-final at the Paris Olympics between Serbia and the United States. 

A representative for the rapper told People on Saturday that Travis 'has been released with no charges.' 

The Sicko Mode rapper's arrest allegedly stemmed from an argument with his bodyguard.

The confrontation reportedly escalated after a security guard attempted to intervene between the two outside of the five-star Four Seasons Hotel George V. 

On Friday, Kylie's ex Travis Scott was arrested in Paris after an alleged altercation with a security guard and his body guard, though he was released without any charges being filed; seen on Thursday

On Friday, Kylie's ex Travis Scott was arrested in Paris after an alleged altercation with a security guard and his body guard, though he was released without any charges being filed; seen on Thursday

Travis was alleged to have been drinking, and he was said to have been held in a cell to sober up before being released. 

The arrest follows another run-in with law enforcement, this time in Miami in June.

At the time, he was arrested following a disturbance on a yacht.

After police interrogated him about whether he had been drinking that evening, he reportedly replied: 'It's Miami.'