Madonna, Beyonce join 'Hope for Haiti Now'

Madonna and Beyonce are the most recent additions to the lineup of the "Hope For Haiti Now: A Global Benefit For Earthquake Relief" telethon, which is set to air tonight (1/22) beginning at 8:00 p.m. ET/PT and 7:00 p.m. CT. Madonna will perform in New York City and Beyonce will take the stage in London, according to a press release.

Haitian artist Emeline Michel also joins the previously announced lineup, which includes Bruce Springsteen, Sting, Taylor Swift, Alicia Keys, Wyclef Jean, Dave Matthews, Stevie Wonder, Keith Urban, Rihanna, Bono and The Edge, and Justin Timberlake, among many others.

The global telethon, which will air on nearly every major broadcast and cable network, also has added numerous high-profile names to its participation roster, including President Bill Clinton, Brad Pitt, Clint Eastwood, Denzel Washington, Ben Stiller and Chris Rock. Also joining the list of "more than 100 of the biggest names in film, television and music" are Halle Berry, Jon Stewart, Julia Roberts, Leonardo DiCaprio, Matt Damon, Meryl Streep, Morgan Freeman, Nicole Kidman, Robert Pattinson, Samuel L. Jackson, Tom Hanks and Will Smith with Muhammad Ali.