Actor Liv Tyler thought Todd Rundgren was her biological father for 11 years. Then, she discovered Aerosmith singer Steven Tyler is her real dad at a concert.

Steven Tyler 's eldest child, Liv Tyler, didn't know she was his kid until her mom Bebe Buell brought her to an Aerosmith concert when she was 11 and revealed the truth.

Liv Tyler Shares Rare Photos of Lookalike Daughter Lula for Sweet Reason originally appeared on Parade. Actress Liv Tyler, ...

Steven Tyler 's daughters, Liv and Mia, are close friends. But the pair share a strange origin story, revealing that they first met when they were 8 and 9 years old, backstage at an Aerosmith concert.

Liv Tyler was a guest on Kate and Oliver Hudson 's Sibling Revelry podcast with her sister, Mia, where she recalled learning for the first time that Aerosmith front man, Steven Tyler, is her dad.

File Photo: Steven Tyler and Liv Tyler are seen at “Steven Tyler: Out on a Limb” Lincoln Center on May 2, 2016 in New York. Originally appeared on E! Online.

Actor Liv Tyler thought Todd Rundgren was her biological father for 11 years. Then, she discovered Aerosmith singer Steven Tyler is her real dad at a concert.© Getty Images ...

Originally appeared on E! Online. Liv Tyler's emotions didn’t miss a thing after finding out that her dad is Steven Tyler. Stream NBC 5 for free, 24/7, wherever you are. The "Lord of the Rings ...