Jennifer Aniston gets 'makeunder' for new movie 'Cake'

For her upcoming flick 'Cake', Jennifer Aniston has got a drab makeunder to play an acerbic woman in a chronic pain support group.

The 45-year-old actress was recently spotted shooting for the movie in baggy pants, a loose T-shirt, and an oversized gray cardigan with minimal makeup, Us Magazine reported.

The 'Horrible Bosses' star's lustrous locks were styled in a straight, shoulder-length cut.

The movie also stars Sam Worthington, Anna Kendrick and 'The Mindy Project's' Chris Messina.