Kourtney Kardashian made it clear she was a fan of the HBO miniseries The Undoing when she captioned a sexy Saturday selfie asking about the show's biggest mystery. .

The post - which included three sexy photos of the Poosh creator and the caption 'Who killed Elena Alves?'  - was enough to grab the attention of one of the show's stars.

Teaser: Kourtney Kardashian flaunted her fabulous figure while getting excited about the finale episode of the HBO miniseries The Undoing online Saturday.

The mystery of who killed Elena Alves, played by actress Matilda De Angelis, is at the center of the six-part mystery psychological thriller!

Flirty: Edgar Ramirez sent the oldest of the Kardashian sisters a message, 'I'm all ears', along with an eye wink emoji after Kourtney teased the finale of The Undoing.

Taking a stab: Filmmaker Eva Ava DuVernay thinks it's Ramirez's character, Detective Mendoza, who killed Elena Alves on The Undoing

Kourtney shared that she has 'a few guesses' as to who killed Elena Alves in another post on her Insta-Story

Bikini babe: Kourtney Kardashian been getting plenty of sun, previously taking to Instagram in a nude velvet bikini from what appeared to be Palm Springs

Just day ago, Kourtney K Kardashian put her sensational physique on display during a day of fun in the sun  in a nude velvet bikini while in what appeared to what appeared to be Palm Springs. 

The Kardashian/Jenners are already preparing for Christmas, as Kourtney previously posted a photo of their white-lit Christmas tree, next to a life-sized plastic Santa. 

Jumping the gun: The Kardashian/Jenners are already preparing for Christmas, as Kourtney previously posted a photo of their white-lit Christmas tree, next to a life-sized plastic Santa