Congratulations: Kylie Jenner, 27, is engaged to boyfriend Timothée Chalamet I, 28, after the Actor recently threw his fiancée Kylie Jenner a LAVISH Surprise Party for her birthday and also announce they are expecting a… See More

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.

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.