While the carousel kicked off with shots of the golfer smiling with aunt Ivanka Trump, snapping a mirror selfie and chatting with President Trump, the teen posed with Vanessa in the fourth slide.
The 47-year-old wore a black dress and matching fur coat, while her daughter rocked a Sherri Hill dress.
The University of Miami-bound high school student sported a different gown by the same designer in the picture ending the slideshow, which also featured her mother, brother Spencer, 12, and sister, Chloe, 10.
Vanessa and Donald Trump Jr., who were married from 2005 to 2018, are also the parents of sons Donald III, 15, and Tristan, 13.
Kai included photos of her dad in the upload as well, from the dancing together to standing side by side in a Trump family group shot.
Donald Jr., 47, gushed over his eldest child’s inauguration appearance in a behind-the-scenes YouTube vlog she posted last week.
“I love this little Smurf so much, and I’m so proud of her,” the businessman said.
Don Jr. and his four siblings — Ivanka, Eric Trump, Tiffany Trump and Barron Trump — all showed support at their dad’s swearing-in ceremony on Jan. 20.
Although the first son brought new girlfriend Bettina Anderson to events all weekend, his ex-fiancée Kimberly Guilfoyle was also present.
Page Six subsequently reported Guilfoyle, 55, “has every intention of remaining” a part of her ex’s life.
As for Anderson, the socialite, 38, buddied up to Tiffany’s mom, Marla Maples, at the Presidential Gala, with the 61-year-old calling her a “beauty.”
Donald Jr. “is essentially living with Bettina at her townhouse,” a source told us, claiming that “his car is there always.”