Kristen Stewart in Stella McCartney | Hollywood Foreign Press Association Beverly Hills Photocall

Kristen Stewart kept it casualfor three days of press in Los Angeles this week, but on Friday morning, she changed into a fun colorblock sheath dress for a special Hollywood Foreign Press Association press conference and photocall to promote two of her movies–”The Twilight Saga: Breaking Dawn – Part 2″ as well as “On The Road”.

Posing amongst a lovely garden setting, Kristen flaunted her slim figure in a Stella McCartney black sleeveless knee-length dress that featured emerald green panels at the shoulder and sides—in McCartney’s signature “Miracle” illusion shape.  Similar versions of this dress were seen in both micro-mini and gown silhouettes with illusion insets for the Winter Evening collection, but this one comes as part of the designer’s Summer 2013 line.

Kristen kept her accessories minimal with a Cartier “Juste Un Clou” white gold bracelet, and wore her make-up on the softer side before finishing off with a little danger—in the form of chic Christian Louboutin “Decollette” black patent pumps.

You can’t really go wrong with a sleek stiletto pump.

What did you think of Kristen’s green-infused LBD?

[ Updated - March 26, 2013: Kristen's Stella McCartney dress is now available through MyTheresa.com & SaksFifthAvenue.com ]