Celine Dion performed to benefit Children’s Hospital Boston to raise money for sickle cell research at Caesars Palace on January 15, 2012 in Las Vegas (Photo credit: Denise Truscello / WireImage.com www.DeniseTruscello.net).

Celine Dion performs benefit for Children's Hospital Boston at Caesars Palace
Photo credit: Denise Truscello / WireImage.com www.DeniseTruscello.net.

Singer/songwriter A.J. Green (from Agassi Prep) and Celine Dion pose for photos backstage before Celine Dion's performance
Photo credit: Denise Truscello / WireImage.com www.DeniseTruscello.net.

Chief Executive Officer of Caesars Entertainment and a member of Children's Hospital Boston Board of Trustees Gary Loveman gives a speech before Celine Dion's performance
Photo credit: Denise Truscello / WireImage.com www.DeniseTruscello.net.

Dr. Matthew Heeney, Dr. Stu Orkin, Celine Dion, Dr. Gary Fleisher and Dr. Dave Williams
Photo credit: Denise Truscello / WireImage.com www.DeniseTruscello.net.

Dr. Matthew Heeney, Dr. Stu Orkin, Chief Executive Officer of Caesars Entertainment and a member of Children's Hospital Boston Board of Trustees Gary Loveman, Celine Dion, Dr. Gary Fleisher and Dr. Dave Williams
Photo credit: Denise Truscello / WireImage.com www.DeniseTruscello.net.

Mrs. Green, Dr. Matthew Heeney, Dr. Stu Orkin, Chief Executive Officer of Caesars Entertainment and a member of Children's Hospital Boston Board of Trustees Gary Loveman, singer/songwriter A.J. Green (from Agassi Prep), Celine Dion, Dr. Gary Fleisher and Dr. Dave Williams
Photo credit: Denise Truscello / WireImage.com www.DeniseTruscello.net.