Liv Tyler is opening up about her complicated family dynamics.

The actress, 47, reflected on how her stepdad, Todd Rundgren, was impacted by discovering her biological father was Steven Tyler.

On Monday’s episode of the “Sibling Revelry” podcast, Liv shared that the Nazz musician, 76, took the news “so hard.”

Liv Tyler talks about Todd Rundgren and Steven Tyler.siblingrevelry/Instagram

Steven Tyler and Liv Tyler.

“I think it’s probably still very hard and painful,” Liv admitted to the brother-sister hosts, Kate and Oliver Hudson.

“I don’t speak to him enough, I love him and I have brothers from him and I had a whole family with them. But I was a kid, so it was really hard because he was mad at my mom and then suddenly Steven was there and we did a paternity test and it was positive and so we moved to New York. I think I was 11 or 12,” she said.

Liv recalled that she wasn’t allowed to discuss who her bio dad was until she and her mom, Bebe Buell, relocated from Maine. She had been under the impression Todd was her biological father, as he also signed her birth certificate when she was born.

Before the news broke, the “Stealing Beauty” star credited Todd for being a hands-on father.

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Steven Tyler and Liv Tyler smile together on the red carpet.Penske Media via Getty Images

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Liv Tyler and Todd Rundgren attend “The Leftovers” premiere after-party in 2014.Getty Images
“He took care of me as, like, he was dad. I felt so much love,” Liv reminisced. “I was able to soak up the love that I could.”

“I remember sitting there for what felt like three days, but it was probably three hours and just basically coming to this conclusion at the end of like, ‘Woah, I have two dads, and all this love and maybe there will be two Christmases. They’re … so different and so lovely.”

Also joining Liv during the podcast episode was her half-sister Mia, whom Steven has with his ex-wife, Cyrinda Foxe. The pair reflected on meeting for the first time at an Aerosmith concert when they were around 8 or 9 years old.

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Todd Rundgren and singer Bebe Buell in NYC in 1976.Redferns

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Liv Tyler, Steven Tyler and Bebe Buell.FilmMagic
“I remember there were no kids backstage,” Mia, 46, said. “So we played hard that night. And we were at this VIP area, outside of the green rooms, and we were just like, you know, doing our 8 and 9-year-old thing, and this fan lady came up and she was like ‘Oh my god, you girls are so cute. Are you guys sisters?’”

Liv recalled confronting Bebe about the look-alike girl she met that night.

“I looked at my mom, and she just started crying. My mom was bawling, and I was like, ‘Is Steven my dad?’ and she just burst,” the star said. “She took me to a bench and we sat on at an outdoor amphitheater, and she told me the whole story in the most sincere, beautiful way.”

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Todd Rundgren and Liv Tyler.WireImage
Steven is also dad to Chelsea, 36, and Taj, 34, from his second ex-wife, Teresa Barrick.

That wasn’t the only Steven-related story Liv and Mia shared, as the latter revealed that their famous father liked to “hide his pill” in the scarves he’d decorate his microphones with.

Meanwhile, hosts Kate, 45, and Oliver, 48, were raised by their mom Goldie Hawn and stepdad Kurt Russell. In November, Oliver opened up about the “Silkwood” star, 74, offering to adopt them in the 1980s.

“Kurt came into my life when I was 6, 5 or 6, kind of the same, and essentially he raised me,” Oliver said on their podcast.

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Liv Tyler and her mother, Bebe Buell, during her 16th birthday party in 1993.

“There was a moment when he asked us, myself and Kate, if we wanted to be adopted and we said ‘no,’” he added. “And not that we were, you know, very aware of what it even f–king meant, we were 6 and however old, or 12, I don’t even remember the age but we just said ‘We don’t need it. The love is right there.’”

Oliver added, “I’m the man I am today because of him.”