Kourtney Kardashian paid tribute to her sister Kim Kardashian on her 39th birthday by sharing a series of throwback photographs, including a never-before-seen image showing Kourtney heavily pregnant with her eldest child, Mason.
The mother-of-three, who has previously spoken about her love of being pregnant, captioned the photo: "Nine months pregnant @kimkardashian." In the picture, the sisters are seen sitting on a sofa in matching dresses, with Kourtney cradling her baby bump.
Kourtney also posted a second retro snap, taken at a restaurant in the mid-nineties. Writing "Happy birthday Kimberly Noel Kardashian West! I love you forever," she shared an image of Kim wearing a pink cardigan and pearl necklace, while Kourtney sported blonde highlights and a white polo shirt. Fans were quick to comment on their fashion choices, with one writing: "Omg the cardigan and pearls," while another jokingly mistook Kourtney for their sister Khloe.
Other family members also marked Kim's birthday on social media. Kendall Jenner posted cute throwback pictures of Kim as a teenager looking after a young Kendall, while Khloe shared a collage of photos spanning the years, including one of Kim holding baby True.
Kim celebrated with a family dinner thrown by her mother, Kris Jenner, and husband Kanye West. The star revealed on Instagram that her favourite Armenian restaurant, Carousel, had catered the event. She also disclosed that Kanye had donated $1 million to charities dedicated to prison reform on her behalf, adding: "This makes my heart so happy!"



