Stars celebrate Thanksgiving

Mary J. Blige at the 85th Annual Macy's Thanksgiving Day Parade in New York.

Avril Lavigne at the 85th Annual Macy's Thanksgiving Day Parade in New York.

Elle MacPherson at the 85th Annual Macy's Thanksgiving Day Parade in New York.

Cee Lo Green at the 85th Annual Macy's Thanksgiving Day Parade in New York.

A float at the 85th Annual Macy's Thanksgiving Day Parade in New York.

A float at the 85th Annual Macy's Thanksgiving Day Parade in New York.

A float at the 85th Annual Macy's Thanksgiving Day Parade in New York.

A giant Elmo at the 85th Annual Macy's Thanksgiving Day Parade in New York.

Jennifer Love Hewitt helps deliver Thanksgiving meals to the homeless at the Los Angeles Mission.

Kim Kardashian helps deliver Thanksgiving meals to the homeless at the Los Angeles Mission.

Zoe Saldana helps deliver Thanksgiving meals to the homeless at the Los Angeles Mission.

Chef Manouschka Guerrier helps deliver Thanksgiving meals to the homeless at the Los Angeles Mission.

Kirk Douglas helps deliver Thanksgiving meals to the homeless at the Los Angeles Mission.

TV host Courtney Hansen helps deliver Thanksgiving meals at the Los Angeles mission.

Model Caprice Bourret assists during a Thanksgiving lunch for homeless women in London.

Former Playboy housemate Holly Madison helps feed the needy on Thanksgiving at the Hard Rock Cafe in Las Vegas.

President Obama with daughters Sasha and Malia at annual pardon of the National Thanksgiving Turkey at the White House in Washington DC.

The National Thanksgiving Turkey, Liberty, waits for his pardon by United States President Barack Obama.

Liberty, a 19-week old, 45-pound turkey will live out its life at George Washington's Mount Vernon Estate and Gardens in Mount Vernon in Virginia after the pardon.

President Barack Obama helps fill bags of produce at the Capital Area Food Bank in Washington DC.

Michelle Obama helps fill bags of produce at the Capital Area Food Bank in Washington DC.