Macy's Thanksgiving Day Parade

From its humble beginnings in 1924 to a grand spectacle today, this parade has a way of warming hearts every Thanksgiving morning.

Carrie Underwood and her Sound of Music castmates hit Herald Square in New York City Monday to rehearse for the Macy’s Thanksgiving Day Parade.

Fans of Carrie Underwood, Kellie Pickler and Florida Georgia Line, give thanks -- they'll be performing at the annual Macy's Thanksgiving Day Parade.