Lady Gaga, Alicia Keys, Taylor Swift Top Charitable Celebs List

MTV News already recognized Lady Gaga as being the most important Woman of the Year (and our most fashionable), but we weren't the only ones taking notice: DoSomething.org listed their top 20 most-charitable celebrities of 2010, and unsurprisingly, Gaga took the #1 spot.

DoSomething helps young people develop causes they care about, and the organization said Gaga represented that spirit this year more than any other artist. From calling for an end to the military's "Don't Ask, Don't Tell" policy (which was recently repealed) to hosting a "Hands Up for Marriage Equality" event, Gaga focused on helping others.

Fellow pop star Alicia Keys was #2 on the "Celebs Gone Good" list. As the founder of Keep A Child Alive, Keys worked harder than ever to provide AIDS treatment worldwide and raised $1.1 million with her Digital Death Campaign, thanks to the help of celebrities such as Gaga, Kim Kardashian, Usher and Justin Timberlake.

Coming after Keys on the list was America's newest sweetheart Taylor Swift, who earned her spot by donating $500,000 to relief efforts after Nashville flooded earlier this year, as well as by joining Scholastic's READ NOW program to promote literacy.

Rounding out the top five were Ashton Kutcher and his hubby, Demi Moore, who launched the DNA Foundation to help stop child sex trafficking and met with world leaders to end slavery worldwide, and Ellen DeGeneres, who teamed up with the Trevor Project to combat bullying and raised more than $150,000 for LGBT people struggling with mental-health issues.

Nick Jonas came onto the list at #6 thanks to his becoming the National Chair for "Walk to Cure Diabetes" as well as his portion of the Jonas Brothers' Change for the Children Foundation.

Matt Damon placed #7 for his Water.org organization, while Leonardo DiCaprio was #8 for donating $1 million to the tiger-preservation foundation Save Tigers Now.

Oprah was #9, and Justin Bieber snuck into tenth place after dedicating a music video to children battling illness worldwide and donating $150,000 to a Buffalo, New York, hospital. He also worked with Pencils of Promise to build schools and increase education opportunities for less-fortunate children, and dedicated $1 of every concert ticket sold to the organization.

Shakira, Betty White, Eva Longoria, Sophia Bush, Alyssa Milano, Sandra Bullock, Wyclef Jean, Prince William, Stephen Colbert and AnnaLynne McCord were the other 10 celebrities recognized for their charitable efforts this year.

After debuting his recent buzz cut and his own charitable efforts, it looks like "Charlie St. Cloud" star Zac Efron might be making a run to place on next year's list.

Who do you think was the most-charitable celeb in 2010? Tell us in the comments below!