Amanda Michelle Seyfried, an American actress, singer, and songwriter, was born on December 3, 1985, in Allentown, Pennsylvania. She is known for her roles in various films and TV series.

In 1990, Amanda Seyfried appeared in four episodes of 'Twin Peaks' as Rebecca 'Becky' Burnett.

In 1992, Amanda Seyfried appeared in two episodes of the MTV Movie & TV Awards as a presenter and as herself.

In 2003, Amanda Seyfried auditioned to play Regina George in Mean Girls, but eventually portrayed Karen Smith, Regina's dim-witted 'plastic' friend and sidekick. The film was a box office success.

Amanda Seyfried rose to fame as an actress in the 2004 film 'Mean Girls' directed by Tina Fey, where she starred alongside Lindsay Lohan.

In 2005, Amanda Seyfried played the lead character Samantha in the film Nine Lives, which consisted of nine short films with different themes and an ensemble cast. Her performance earned her the Best Actress award at the Locarno International Film Festival.

From 2006 to 2010, Amanda Seyfried portrayed Sarah Henrickson in the HBO drama series Big Love. The show focused on a fictional fundamentalist Mormon family, where Seyfried played the role of Bill and Barb's first daughter.

In 2008, Amanda Seyfried starred in the ABBA-based musical film 'Mamma Mia!', which lifted her to A-list status. Co-starring with Meryl Streep, Pierce Brosnan, and Colin Firth, the film was a global success.

In September 2009, Amanda Seyfried appeared in the comedy horror film Jennifer's Body as Anita 'Needy' Lesnicki, the best friend of the title character. The film premiered at the Toronto International Film Festival.

The film adaptation of the novel 'Dear John' written by Nicholas Sparks, starring Amanda Seyfried alongside Channing Tatum, was released on February 5, 2010. Despite receiving generally negative reviews, it became the first film to dethrone Avatar at the top of the United States box office.

Amanda Seyfried starred as the title character in the erotic thriller 'Chloe', released on March 26, 2010. The film, directed by Atom Egoyan, was a commercial success and received favorable reviews, boosting Seyfried's industry acclaim.

Amanda Seyfried played the lead role of Valerie in Catherine Hardwicke's 'Red Riding Hood', released on March 11, 2011. The film received mostly negative reviews but managed to earn $90 million worldwide.

In 2012, Amanda Seyfried starred in the musical drama film Les Misérables. Her role in the movie showcased her versatility as an actress and garnered critical acclaim.

In 2013, Amanda Seyfried starred in the film 'Lovelace', portraying the real-life pornographic actress Linda Lovelace.

Amanda Seyfried is actively involved in supporting and aiding children affected by war through her work with organizations like War Child and INARA.

On September 12, 2016, Amanda Seyfried and Thomas Sadoski confirmed their engagement.

Actress and singer-songwriter Amanda Seyfried, aged 31, married actor Thomas Sadoski, aged 40, in a private ceremony on March 12, 2017.

Amanda Seyfried played a prominent role in the 2018 sequel of 'Mama Mia!' alongside Meryl Streep.

In 2019, Amanda Seyfried starred as Eve in 'The Art of Racing in the Rain', a comedy drama based on a best-selling book.

Amanda Seyfried received critical acclaim and nominations for the Academy Award and Golden Globe Award for Best Supporting Actress for her portrayal of Marion Davies in David Fincher's biopic Mank in 2020.

Amanda Seyfried takes on the role of Catherine Claire in the project Things Heard & Seen in 2021.

In 2022, Amanda Seyfried starred in the TV mini series 'The Dropout' where she portrayed convicted Theranos fraudster Elizabeth Holmes, earning an Emmy for Outstanding Lead Actress in a Limited series.

Amanda Seyfried appears as Rya Goodwin in the series The Crowded Room consisting of 10 episodes in 2023.

A project where Amanda Seyfried portrays the character of Candice in the year 2024.