United Kingdom, April 16 -- Liv Tyler needed therapy in the years after finding out her dad is Steven Tyler.

The 'Lord of the Rings' actress found out when she was "11 or 12" that the Aerosmith frontman was her biological father, having believed until then it was musician Todd Lundgren, and though at the time she was appreciative of all the "love" in her life, she needed help to process the news years later.

Speaking to Kate and Oliver Hudson on their 'Sibling Revelry' podcast, she said: "[When] you get older... your life starts to formulate and then you're like, 'Wait, I need to deal with this s***."

Liv's mom, Bebe Buell, broke the news during an Aerosmith concert and she recalled sitting for "what felt like three days" trying to com...