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Lady Gaga
Lady Gaga has thrown her star power behind numerous organizations to help homeless youth. She also donated $1 million to help Hurricane Sandy victims and founded the Born This Way Foundation with her mother in 2011.
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Jessica Alba
In 2009, the young actress was one of the Love Our Children USA's "Mothers Who Make A Difference" awards. She has also helped raise money for AMFAR.
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Beyoncé
Beyoncé has proven time and again that she has a heart as big as her fanbase. She cofounded the Survivor Foundation, was an ambassador for World Children's Day and has been involved in many other charitable efforts.