Mandy came onto the scene in 1999 when she toured with *NSYNC and released her first, sugary-sweet album, So Real. The title track featured lyrics as green as she was, like: "Innocence is what I've got/ It'll take true love to hit the spot."
Mandy hit the scene with her 1999 debut single "Candy," which peaked at number 41 on the Billboard Hot 100.
Along with Britney and Christina, Mandy was part of the major pop wave of the late '90s. The hit song that really put her on the map? 1999's "Candy," of course — with a chorus that seemed to be stuck in everyone's heads: "So baby come to me/ Show me who you are/ Sweet to me/ Like sugar to my heart."
Her second album, 2000's I Wanna Be With You, included a few remixes from her first record plus a handful of new singles, like the title track and "Lock Me In Your Heart." The songs echoed the sweet sentiments of her first album: "Lock me in your heart and never let me go/ I must confess, you are the best/ So baby, come take me."
Mandy's 2000 single "I Wanna Be with You" became her first Top 40 hit in the US, peaking at number 24 on the Hot 100 chart.
For one of her first movie roles, Mandy played mean girl Lana opposite Anne Hathaway in 2001's The Princess Diaries. In the film, the two girls fight over Josh — played by popular Disney star Erik Von Detten — and Mandy's character gets on stage to lament the situation: "Hey-Hey, set me free/ Stupid Cupid, stop picking on me."
With her third studio album, 2001's Mandy Moore — and a new, darker hair color — she stuck to her original pop sound and released two successful singles: "In My Pocket" and "Crush." The first featured a more upbeat tempo but stuck to the need-your-love theme: "Nothing but pennies in my pocket/ Nothing but faith to keep me warm/ But baby, I'd be broke without it/ Tell me, how much for you love?"
The second single from Mandy's self-titled 2001 album was "Crush," and it became her second single to chart on the Bubbling Under Hot 100 chart, peaking at 19.
In 2002, Mandy broke hearts as Jamie Sullivan, a quiet, bookish type who battles leukemia in a tragic — and, OK, sort of cheesy — love story opposite Shane West. Who can forget the way Landon makes Jamie's bucket-list dreams come true?
One of Mandy's more successful albums, 2003's Coverage, featured 12 covers of hits from the '70s and '80s. The most popular single? "Have a Little Faith in Me" by John Hiatt, with its original lyrics: "When the road gets dark/ And you can no longer see/ Let my love throw a spark/ And have a little faith in me."
Throughout the 2000s, Mandy kept busy with several starring roles in romantic comedies, including 2003's How to Deal and Chasing Liberty — alongside Leap Year's handsome Matthew Goode — the following year.
Off screen, in 2006, the American girl next door was linked to one of the country's hottest tennis pros, Andy Roddick.
Mandy reverted back to the blond, evil popular girl in 2004's Saved! — a role that earned her a Teen Choice Award nomination for Choice Movie Hissy Fit. As the Christian character Hilary Faye, Mandy struggles with the definition of love and whether an act of love can be considered holy.
In 2007's Because I Said So, Mandy played insecure Milly Wilder, whose overbearing mother — Diane Keaton — places a personal ad to help her daughter meet a good man. Milly ends up dating not one, but two men, while learning the tricky balance of mother-daughter love, too.
After a brief break from the limelight, Mandy married rocker Ryan Adams on March 10, 2009. On her romance with Ryan, Mandy told People: "I feel very supported and loved and at peace. My life has reached this really beautiful point where I can sort of look around and go, 'Wow. I'm so lucky.' I got my own little happy ending."
In 2010, as the voice of Rapunzel in Disney's Tangled, Mandy starred opposite Chuck cutie Zachary Levi. She also sang the movie's hit track, "I See the Light," which earned an Oscar nomination for best original song.
Now, over a decade after first entering the industry, Mandy keeps spreading the love through a variety of charity efforts and appearances. She serves as the ambassador for the UN's Nothing But Nets campaign, which launched a mass distribution of mosquito nets to help fight Malaria in Africa.