PHILADELPHIA, PENNSYLVANIA - SEPTEMBER 08: (L-R) Jason Kelce and Kylie Kelce attend Thursday Night Football Presents The World Premiere of
(Photo by Lisa Lake/Getty Images for Prime Video)

Kylie Kelce is mourning the death of her beloved pet, Winnie, posting on Instagram to express her deep love for the pup.

"When I was in high school I had a folder on my desktop labeled 'God's gift to earth'. It was images of Irish Wolfhouds that I had collected from Google," said Kelce, 31.

"I had fallen in love with the breed when I was a young and never let my fascination with them fade. It all lead me to Winnie and holy s**t did she live up to the hype. She was everything I had hoped for in a wolfie and more," she continued.

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Although her husband, Jason Kelce, didn't respond directly to the post, his wife was sure to include him, showing a photo of the Philadelphia Eagles' player caressing the pooch.

"I lost part of my soul today, but I know she is at peace. I love you, Winn. You will always be my first born child," she concluded.

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Other photos in the reel include snaps of Winnie on their wedding day, another of her resting in the garden, and another picture of her laying in the sunlight.

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Jason, who has been married to Kylie since April 2018, recently announced his retirement from the NFL. The 36-year-old officially called it quits Monday at the team's NovaCare Complex.

Jason and his brother Travis Kelce, who is dating Taylor Swift, had a heart-to-heart recently on their joint podcast 'New Heights.' Travis, 34, became emotional about his brother's departure from the game saying his career was "a success."

"It was a fun a** journey to watch," Jason replied fighting back tears. "Like I said yesterday, man I just appreciate you showing me the way and bringing us all along the journey with you."