Liv Tyler born on July 1, 1977 at Mount Sinai Hospital in New York City, New York is an American actress most famous for her roles of Grace Stamper in Armageddon and Arwen in The Lord of the Rings trilogy.Liv is the first born daughter of Steven Tyler, the lead singer of Aerosmith; and Bebe Buell, a model and singer. Having grown up with the understanding that rock star Todd Rundgren was her biological father, she only found out the truth about her parentage at age 9, after noticing that Steven Tyler's daughter Mia Tyler looked like her twin. She then changed her name from Liv Rundgren to Liv Tyler but kept Rundgren as a middle name. Liv's mother named her after Norwegian actress Liv Ullmann. In 1979-80 Bebe Buell was romantically involved with Stiv Bators and Bators lived with the two of them in Portland, Maine for a period where Bebe kept a house. Liv's father was also rumored to be Ritchie Blackmore, guitarist of Deep Purple and Rainbow.

The rumor was started by Elissa Perry the wife of Aerosmith guitarist Joe Perry who apparently wanted to put doubt into Tyler's mind that he might be the father. Steven Tyler has since denounced the fabricated story as a lie on VH1's Behind The Music devoted to Aerosmith. She attended the Congressional School of Virginia, Breakwater Elementary School and Waynflete School before returning to New York City with her mother at the age of 12. She went to York Prep in NYC for Junior High and High School graduating from there in 1995 one month before jetting off to Italy to star in "Stealing Beauty".

Although it was her appearance in Armageddon (which was released on her 21st birthday, and included the song "I Don't Want to Miss a Thing" by her father's band) that made her known to a very wide public, she has proven herself in more sophisticated acting challenges such as Onegin (based on the 19th century Russian novel by Alexander Pushkin), in which she convincingly portrayed the character of Tatyana Larina, and two movies directed by Robert Altman: Cookie's Fortune and Dr. T & the Women. Her most successful role came in the Lord of the Rings trilogy, in which she played Arwen Undómiel. Tyler was chosen by People magazine as one of the 50 Most Beautiful People in the World in 1997.