Despite having just performed the night before in her hometown of Texas, the star looked fresh faced as she stepped off the plane at Newark Airport in New York on America's Labor Day yesterday (2 September).
The US X Factor judge went for a casual look in a simple white T-shirt, wearing a cute plait in her long blonde wavy locks.
She also accessorised with classic black Ray-Bans and a gorgeous black Prada handbag.
Although she was no doubt exhausted from her flight, Demi still stopped to take pictures with a fan. What a girl!
Demi starting filming for hit Fox TV series Glee on Thursday tweeting: "About to start rehearsals for day 2 of Glee!! Love this set!!" She will play the girlfriend of Santana, played by Naya Rivera.