Amanda Seyfried treats American Airlines passengers to snacks

Mamma Mia! star Amanda Seyfried turned air stewardess on a recent flight from New York to Los Angeles when she started handing out snacks to fellow friendly flyers.

The peckish actress grabbed a trayful of nibbles from the American Airlines flight attendants and offered other hungry passengers a snack.

One fellow flyer tells Us Weekly, "Amanda just took over and served cookies for the flight attendants! She was super friendly, laughing and joking with the flight attendants for a while. Then she came out with a tray passing everyone the chocolate chip cookies.

"She was just like, 'Would you like a cookie? Would you like a cookie?' to everyone."