UNICEF is tapping into the star power of several musicians, actors and athletes to raise money for a worthwhile cause. Taylor Swift is joining her pal, UNICEF ambassador Selena Gomez, along with Robin Williams, Adrian Grenier, Orlando Magic player Dwight Howard and Rihanna in offering up their own water for the Tap Project, which will raise money for almost 900 million people all over the globe without access to safe, clean drinking water.

As part of the initiative, the celebrities will bottle up their own household tap water, which will then be included in a sweepstakes, with the winner taking home a limited-edition 'Celebrity Tap Pack,' featuring a one-of-a-kind case of custom-created water bottles filled with the tap water from each of the celebrity supporters.

The UNICEF Tap Project has raised almost $2.5 million dollars since its inception in 2007. Every $5 donation made through April 30 at 11:59 PM ET will bolster UNICEF's clean water and sanitation programs in Togo, the Central African Republic and Vietnam. For more information, or to make a donation, visit here.

While she's obviously happy to help, Taylor may have to send someone else to her house to bottle up her water. The four-time ACM award nominee is currently in Europe for her Speak Now tour. She plays in France tomorrow night (March 17), followed by shows in Spain, the United Kingdom and Ireland. Keep track of her world travels here.