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She's seemed to continue to hold a close relationship to her youngest daughter Kylie Jenner, despite being estranged from many of the remaining Kardashian-Jenner clan.
And showing her ongoing support, Caitlyn Jenner took to social media on Friday to wish the 21-year-old a happy birthday.
Shots - Kylie - Party - Thursday - Night
The 68-year-old shared two monochrome shots from the photo-booth with Kylie from her party on Thursday night to mark the occasion.
'Can't believe my baby girl turned 21! So much fun last night. Happy birthday @kyliejenner,' she wrote.
Image - Bleach - Kylie - Stick - Tongue
The image saw a bleach blonde-haired Kylie stick out her tongue while pressing her face up next to her dad's.
And the birthday celebrations didn't end there with Caitlyn sharing yet another post during the day.
Fun - Photo - Booth - @ - Kyliejenner
'Had so much fun in the photo booth at @kyliejenner's birthday party', she wrote.
The image also featured Caitlyn's rumored girlfriend Sophia Hutchins.
Pepperdine - University - Undergraduate - Transgender - Cait
The 22-year-old Pepperdine University undergraduate, who is also transgender and has cited the I Am Cait author as an inspiration, and Caitlyn have appeared almost inseparable since last year.
It's a rare occasion these...
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