Kylie Jenner shows off her chiseled abs while going matchy-matchy with her longtime best friend, Stassie Karanikolaou!

See every one of Kylie Jenner and Stassie Karanikolau's coordinated outfits Kaitlyn is a former Assistant Style & Beauty Editor at PEOPLE. Even when they're "mad at each other," Kylie can't resist ...

Olivia Jade Giannulli had a fun girls’ night out with Kylie Jenner and her crew of BFFs, including Anastasia “Stassie” Karanikolaou and Victoria Villarroel, on Monday night. Giannulli ...

The Kylie Cosmetics mogul threw best ... pink swimsuit as she celebrated best friend Anastasia (Stassie) Karanikolaou’s 22nd birthday. Jenner went all out for Karanikalaou’s special day ...

And Kylie Jenner revealed some behind-the-scenes looks ... The reality star shared photos of herself with one of her best friends, Stassie Karanikolaou, as well as her two-year-old son Aire ...

Before she was the youngest self-made billionaire, Kylie Jenner was known to fans as “King Kylie.” This iconic era of hers ...

On the eve of the 27th birthday of the YouTube star, Kylie Jenner, she celebrated her best friend in Los Angeles on Saturday, June 8. The celebration included other celebrities like Addison Rae ...