BumpWatch: Jennifer Garner - In the Navy

Striking a serious pose, Jennifer Garner appears at a special screening for her latest film, Butter, at AFI Fest 2011, held Sunday at Grauman's Chinese Theatre in Hollywood, Calif.

Work it!

Striking a serious pose, Jennifer Garner appears at a special screening for her latest film, Butter, at AFI Fest 2011, held Sunday at Grauman’s Chinese Theatre in Hollywood, Calif.

Joining the actress, 39, at the event was costar Olivia Wilde.

Garner expects her third child with husband Ben Affleck this winter.

The couple are already parents to daughters Violet Anne, 5½, and Seraphina Rose Elizabeth, 2½.

RELATED: BumpWatch: Jennifer Garner – Lacy Lady