Jennifer Garner Wows at 'Timothy Green' Premiere

Jennifer Garner has made waves with her second red carpet appearance since delivering her son six months ago.

Monday night saw the 40-year-old mother of three boldly pose for pictures at the premiere of her latest movie, "The Odd Life of Timothy Green."

Usually photographed in t-shirts and jeans, Garner donned a crimson red dress paired with satin heels and upswept hair. The appearance also displayed the actress' youthful complexion and healthy figure, causing fans to wonder how she lost much her post-baby weight so quickly.

"Timothy Green" is the first film released since Garner and husband Ben Affleck's son Samuel was born in February. The couple also shares daughters Violet, 6, and Seraphina, 3.

Garner appeared confident to reassert herself into Hollywood's spotlight as she was joined by "Timothy Green" co-stars Joel Edgerton and C.J. Adams.

The Peter Hedges-directed film also stars Ron Livingston and follows a childless couple who composes a list of their wishes and buries it in their backyard when a child arrives.

"The Odd Life of Timothy Green" hits theaters Aug. 15.

The actress appeared solo during the event, as Affleck is likely on the set of his upcoming movie "Runner, Runner."

Just one day ahead of the movie premiere, Garner was spotted entering a Los Angeles gym for a pre-red carpet work out.

The West Virginia native was well known for her role as Sydney Bristow on the television series "Alias," where she sported tight suits and a toned figure.

Garner has previously stated that she is in no rush to lose weight and would rather focus on the happiness of her children. Despite her relaxed attitude about appearance, the "Ghosts of Girlfriends Past" star works out two to four times a week, according to Wonderwall.

"I actually stayed in really good shape the whole time I was pregnant, and I was really careful with what I ate this time," explained Garner. "I work out as often as I can. And some weeks, that's four days, and some weeks that's two. I can only lose so much sleep for working out when I'm still getting up with a baby."