Throughout her career, Aguilera has been involved with certain charities. She signed a letter from PETA to the South Korean government asking that the country stop its alleged killing of dogs for food.[63] Her involvement in supporting the Defenders of Wildlife have also added to her donations with charities.
Aguilera is still a major contributor in her hometown of Pittsburgh contributing regularly to the Women's Center & Shelter of Greater Pittsburgh. According to her official website, she toured the center and donated $200,000 to the shelter. She also has auctioned off front row seats and back stage passes for the Pittsburgh based charity.[64] She has continued her donations and visits to the shelter, and plans to open an additional one.[65] She also supports the Coalition Against Domestic Violence, and Refuge UK.[66] Since then she has worked with Lifetime Television's 'End violence against women' campaign. Her work there included a public service announcement which aired on the network and during her 2007 tour.[67]
Aguilera contributes in the fight against AIDS, by participating in AIDS Project Los Angeles' Artists Against AIDS "What's Going On?" cover project. In 2004, Aguilera became the new face for cosmetic company M·A·C and spokesperson for M·A·C AIDS Fund. Aguilera appeared in advertisements of the M·A·C's Viva Glam V lipstick and lipgloss. In addition, Aguilera contributed to YouthAIDS by posing for a joint YouthAIDS and Aldo Shoes campaign for "Empowerment Tags" in Canada, the U.S. and the UK. She was featured with one of three ubiquitous slogans, "Speak No Evil?" and stated, "HIV is something that people don’t want to talk about, hear about, or face."[68][69] Singer Elton John hand-picked Aguilera, among others, for his Fashion Rocks concert benefiting his AIDS foundation.[70] The show, which accompanies music and fashion to benefit the fight against AIDS/HIV, is televised annually and aired in September.