Tallulah Willis is opening up about her autism diagnosis for the very first time.

The 30-year-old fashion designer posted a sweet throwback video on Instagram over the weekend that showed her 10-year-old self playing with the ears and iconic bald head of her father, Bruce Willis , at the 2004 premiere of The Whole Ten Yards.

tell me your [sic] autistic without telling me your autistic, she captioned the post with.

The post was flooded with comments from supportive followers, one of whom lauded Tallulah Willis as brave for speaking up.

Not sure how much of your journey youve shared but would love to read more, the user said, to which Tallulah Willis replied: actually this is the first time Ive ever publicly shared my diagnosis. Found out this summer and its changed my life.

Autism, which is formally known as autism spectrum disorder, is a developmental disability that can impede social communication and interaction and spawn repetitive behaviors or interests, according to the Centers for Disease Control and Prevention .

Tallulah Willis has been open about her struggles before and previously admitted having had an eating disorder , living with borderline personality disorder and having ADHD.

In an essay she wrote for Vogue last year, she shared that navigating her own issues made it much harder to handle her fathers condition.

I admit that I have met Bruces decline in recent years with a share of avoidance and denial that Im not proud of, Tallulah Willis wrote. The truth is that I was too sick myself to handle it.