Both Zac Efron and Taylor Swift have signed on to help out at George Clooney’s Hope For Haiti Telethon.

In addition to these two, Anna Kendrick from Twilight and the recent George Clooney movie “Up In The Air,” will be there as well as Robert Pattinson – who will be hosting the event.

More celebrities helping out are expected to be announced soon.

Image Via Flickr

• Vanessa Hudgens, Ashley Tisdale And David Archuleta Added To “Hope For Haiti”
• George Clooney Creates “Hope For Haiti” Telecast
• Selena Gomez Helps In Hope For Haiti Telethon
• Celebrities Help Out “Hope For Haiti Now” January 22, 2010
• Taylor Swift And Taylor Lautner Dating?
• Hope For Haiti Album Expected To Top Charts – Includes Song By Taylor Swift
• Taylor Lautner, Robert Pattinson, Kristen Stewart Sign On For Twilight’s “Breaking Dawn”
• Zac Efron Is Glad About Robert Pattinson’s Popularity
• Taylor Lautner, Miley Cyrus and Demi Lovato To Attend People’s Choice Awards
• Benefit Concert For Haiti At The Miami Heat Arena With Justin Bieber
• Taylor Swift Not Recording “We Are The World”