Patti LaBelle performing at 9/11 anniversary event

In this Feb. 24, 2010 file photo, recording artist Patti LaBelle poses for a portrait in New York. LaBelle is getting an honorary degree from Temple University in her hometown of Philadelphia. The university will present LaBelle with the doctorate in humane letters at its May 13, 2010 commencement ceremony. (AP Photo/Jeff Christensen, File) (AP)

September 9, 2011 7:18:40 AM PDT
Patti LaBelle will be among those taking part in an event in Washington this weekend to mark the 10th anniversary of the 9/11 attacks.