Cameron Diaz joins Boston Celtics at 9/11 event

In this photo provided by Regan Communications actress Cameron Diaz smiles while working with volunteers to assemble an elevated flower bed at the Young Achievers Pilot School, in the Mattapan neighborhood of Boston, Friday, Sept. 11, 2009. Diaz worked for two hours Friday with members of the Boston Celtics, students, and volunteers on the project that marked the first national day of service on the anniversary of the Sept. 11, 2001 terrorist attacks. (AP Photo/Regan Communications, Sean Flanagan) **NO SALES**