Ireland Baldwin shared rare comments about her “bats–t crazy” stepmom, Hilaria Baldwin, in a new Instagram post .

The model joked about their unique bond while crediting the yoga instructor for “saving” dad Alec Baldwin’s life — and congratulating her on her new “Dancing With the Stars” gig .

“I wanted to take a second to talk about my step mom @hilariabaldwin,” Ireland wrote Thursday, alongside a photo of herself posing with Hilaria, her dog and one of her stepsiblings. “I think if people actually knew her the way I do, they would be quite surprised.”

The model, 29, acknowledged that her message “may come out of left field” for some people, due to her decision to rarely post about her family life on social media.

“Hilaria has had a far more complex and chaotic upbringing than sh

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