Jennifer Lawrence shows off her pearly whites on Good Morning America in New York City on Wednesday morning (March 21).

The 21-year-old actress dished about the extensive athletic training she had to go through for the leading role of Katniss Everdeen for The Hunger Games — training that included her learning how to run again!

Jennifer shared, “I’m pigeon-footed so I run like I have real problems.”

“So I decided to learn how to run with my feet straight and then they ended up just taping my ankles to make my feet go out,” she added.

10+ pics inside of Jennifer Lawrence…