Jennifer Aniston is the queen of casual and the actress looked effortlessly cool on set yesterday.

Taking a break during filming for The Baster in New York, the former Friends star stepped out to make a phone call wearing red combat pants and a black leather jacket.

Jen proved that she is in great shape and revealed her taut midriff and toned biceps when she took off her jacket.

See Jen's style on set through the years below