Liv Rundgren Tyler (born Liv Rundgren; July 1, 1977) is an American actress. She began her career as a model before making her film debut in Silent Fall (1994). She went on to receive critical recognition and attention after her starring roles in various films including Heavy (1995), Empire Records (1995), Stealing Beauty (1996), That Thing You Do! (1996), Inventing the Abbotts (1997), Armageddon (1998), Cookie's Fortune (1999) and One Night at McCool's (2001). She then appeared as Arwen Undómiel in the Lord of the Rings film trilogy (2001–2003), which became one of the highest-grossing film series of all time. Tyler subsequently appeared in a variety of roles, including the films Jersey Girl (2004), Lonesome Jim (2005), Reign Over Me (2007), The Strangers (2008), Robot & Frank (2012), Space Station 76 (2014), Wildling (2018), and Ad Astra (2019). She has also starred as Betty Ross in the Marvel Cinematic Universe (MCU) films The Incredible Hulk (2008) and Captain America: Brave New World (2025). In television, she has starred in the HBO supernatural drama series The Leftovers (2014–2017), the BBC period drama Gunpowder (2017), Harlots (2018–2019) and the Fox series 9-1-1: Lone Star (2020). Outside of film, Tyler has served as a UNICEF Goodwill Ambassador for the United States since 2003, and has been a spokesperson for Givenchy's line of perfume and cosmetics. She is also notable as the daughter of Steven Tyler and Bebe Buell, although she has a very close relationship with her adoptive father Todd Rundgren. Tyler has also performed with composer Howard Shore and covered various songs including "Hey, That's No Way to Say Goodbye" and "Need You Tonight".