EXCLUSIVEKylie Jenner's fans think they spy her boyfriend Timothee Chalamet in the background of one of her new Instagram photos

Kylie Jenner's fans think they have made a discovery.

Several of the star's Instagram followers believe they have spied her boyfriend Timothee Chalamet in one of her new posts.

In an image of her sitting in a black dress while holding a bottle of Glow, a man can be spied to the right in the background.

He has on a blue cap with longer brown hair peeking out, which is the Wonka actor's signature style.

The person is also dressed in black, which Timothee often does.

Kylie Jenner 's fans think they have made a discovery. Several of the star's Instagram followers believe they have spied her boyfriend Timothee Chalamet in one of her new posts

Kylie Jenner 's fans think they have made a discovery. Several of the star's Instagram followers believe they have spied her boyfriend Timothee Chalamet in one of her new posts

In an image of her sitting in a black dress while holding a bottle, a man can be spied to the right in the background

In an image of her sitting in a black dress while holding a bottle, a man can be spied to the right in the background

Her 398 million Instagram followers went wild over the possibility that it was the New Yorker in the image.

It was claimed in July that Jenner feels 'protective' of her relationship with Chalamet.

The 26-year-old reality TV star has been dating the Dune actor since last year and he has yet to make an appearance on her family's show The Kardashians amid reports Kylie is determined to keep the romance as private as possible as they strive to make their long-distance love affair work.

A source told PEOPLE: 'Kylie is protective of the relationship, but whenever she talks about him, she has a huge smile. She really likes so many things about him.'

The pair have been kept apart by work commitments recently as Timothee has decamped to New York to film his Bob Dylan biopic ' A Complete Unknown' while Kylie remains in California with her two young children from a previous relationship.

However, they are believed to be working hard to keep the romance going by flying back and forth to see each other regularly.

The insider added to PEOPLE: 'Things are great with Timothee. Kylie is happy.

'They are both busy, but making time to see each other, especially on the weekends. He's been working in N.Y.C. She's visited him and he's also been back to L.A. some weekends. They're making it work.'

Kylie previously dodged a question about her relationship during an interview with the New York Times earlier this year.

He has on a blue cap with longer brown hair peeking out, which is the Wonka actor's signature style. The person is also dressed in black, which Timothee often does

He has on a blue cap with longer brown hair peeking out, which is the Wonka actor's signature style. The person is also dressed in black, which Timothee often does

Here is another close-up look at the man who could be Chalamet, who once dated Madonna's daughter Lourdes Leon

Here is another close-up look at the man who could be Chalamet, who once dated Madonna's daughter Lourdes Leon

When asked if dating the actor had changed her style, she replied: 'I just don't want to talk about personal things ... I don't know how I feel about that … It's just years and years of not feeling like my face or looks are accepted. There's nothing anyone could ever say now that would hurt me.'

The pair have been attending public events together in recent months, including the Golden Globe awards back in January and an insider explained she wants to make sure she supports her partner at important moments.

The source told 'Entertainment Tonight': 'Things have been going very well between Kylie and Timothée. They are extremely supportive of one other and like to be there for each other.

'Kylie is extremely busy and has so many of her own things going on, but she makes an effort to show up for Timothee. It means a lot to him to have her support and that she goes out of her way for him and the things he's passionate about.

Here they are pictured together at the Golden Globes in January in Beverly Hills

Here they are pictured together at the Golden Globes in January in Beverly Hills

'He is so incredibly appreciative and sees a side of Kylie that she doesn't necessarily show everyone.'

On Monday, the reality star also 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.

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.

Her BFF Stassie Karanikolaou was pictured partying with her on a yacht, and her two-year-old son Aire was also pictured in an adorable photo as he chowed down on her birthday cake

Her BFF Stassie Karanikolaou was pictured partying with her on a yacht, and her two-year-old son Aire was also pictured in an adorable photo as he chowed down on her birthday cake

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

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

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

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.