August 8, 2022 | 8:54am

Caitlyn Jenner praised Khloé Kardashian as “strong” after the “Kardashians” star welcomed baby No. 2 with her ex Tristan Thompson.

“Congratulations major @khloekardashian!” the retired athlete, 72, tweeted Friday while sharing an article revealing her former stepdaughter’s son’s arrival via surrogate.

“I love you so much!” Jenner continued. “You are such a strong woman. And what an amazing mother!”

Page Six exclusively confirmed the on-again, off-again couple’s new addition on Friday, nearly two months after news broke that they had conceived a son in November 2021 with a gestational carrier’s help.

“Khloé is incredibly grateful to the extraordinary surrogate for such a beautiful blessing,” the reality star’s rep told us in July. “We’d like to ask for kindness and privacy so that Khloé can focus on her family.”

Sophia Hutchins, Kim Kardashian, Kourtney Kardashian, Caitlyn Jenner, Khloé Kardashian, Kylie Jenner and Kendall Jenner“What an amazing mother,” Jenner tweeted.caitlynjenner/Instagram

An insider added at the time that Kardashian, 38, and Thompson, 31, were not back together, noting the little one was already “in the works” when the Chicago Bulls player’s December 2021 cheating scandal made headlines.

“By then, Khloé was just like, ‘I’m going to be doing it by myself,'” the source explained.

Tristan Thompson, Khloé Kardashian and TrueNews broke in July that exes Kardashian and Tristan Thompson were expecting their second child together.BACKGRID

Kardashian has yet to share her newborn’s name or photo via social media. Instead, she posted a tribute to her and Thompson’s 4-year-old daughter, True, on Sunday.

“My happy sweet girl,” the “Keeping Up With the Kardashians” alum wrote of her eldest.

While True is the Hulu personality’s only other child, Thompson is also the father of sons Prince, 5, and Theo, 8 months, with Jordan Craig and Maralee Nichols, respectively.

Khloé Kardashian and TrueThe on-again, off-again couple previously welcomed daughter True, now 4, in April 2018.khloekardashian/Instagram

The NBA power forward initially denied fathering Theo last year but later confirmed his paternity via Instagram Stories.

“I take full responsibility for my actions,” he told his followers in January. “I sincerely apologize to everyone I’ve hurt or disappointed throughout this ordeal both privately and publicly.”