Calmly walking past awaiting paparazzi, the "27 Dresses" darling proceeded into the entrance before disappearing past the security checkpoint.
The sighting comes just as it has been announced that Miss Heigl has signed on to star in upcoming drama "The Age of Adaline".
According to The Hollywood Reporter, Katherine "will play the title role in the epic love story which centers on a young woman who finds she is unable to die after an accident. She later meets a man for whom she decides to give up her immortality."
To be produced by Lakeshore Entertainment and Sidney Kimmel, filming is planned to get underway in October.
