The actress, 40, turned up to the premiere of her new film The Odd Life of Timothy Green having traded in her usual blue jeans and T-shirts for a stunning crimson red dress and satin heels.
With a throw of the hip, her shoulders held firmly back, the mother-of-three looked confident and ready to resume her role as a Hollywood darling.
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Lady in red: Actress Jennifer Garner arrives at the premiere of Walt Disney Pictures' The Odd Life of Timothy Green at the El Capitan Theatre in Hollywood, California on Monday
Alongside co-stars Joel Edgerton and child star CJ Adams, Jennifer delivered a sense of effortless style.
The actress' hair was tousled into a loose ponytail, soft waves framing her face.
Her make-up highlighted her natural beauty, with pale pink lipstick and rouge making for a youthful complexion, while her dark eyes smouldered for the cameras.
Radiant: The actress looked comfortable and confident as she posed for photographers
Flawless face: A lash of light pink lipstick and rouge, and smouldering shadow, and Jennifer was ready for her latest Hollywood event
Co-stars: Jennifer Garner and Joel Edgerton flashed their megawatt smiles in front of clamouring fans
Child star: Jennifer put a loving hand on the shoulder of her little co-star, CJ Adams, as the actors posed with director Peter Hedges
Come here you! Jennifer and CJ looked glad to be reunited at the event as she gave him a motherly squeeze
While the frock was forgiving in its cut, Jennifer appeared to need little help hiding her figure.
Having given birth to baby Samuel, her first son with husband Ben Affleck, in late February, it seems she's had little trouble shedding her baby weight.
Boasting a healthy and toned shape, the actress is refreshingly bucking the trend for a post-pregnancy size zero.
Pretty in pastel: Cheryl Hines, left, and Bella Thorne, right, also attended the event
Dashing: Joel Edgerton, left, and Ron Livingston, right, cleaned up well for the occasion
Flashing a smile: Actress Odeya Rush, director Peter Hedges, and CJ Adams posed politely for the cameras
Doting mom: Cheryl Hines also brought along her lovely young daughter, Catherine
A family affair: Charmed actress Holly Marie Combs brought her family to the Disney premiere
And for all the photos of the actress out with her family its easy to imagine how she managed to size down so quickly.
Jennifer is often seen out with Ben and their daughters Violet, six, and Seraphina, three - embodying the role of the all-American mother often in blue jeans and T-shirts.
Her actor husband was nowhere in sight today, presumably having returned to Puerto Rico, where he has been filming new movie Runner, Runner.
Ben, alongside Justin Timberlake, plays a deceptive and illegal business founder who is involved in the world of offshore gaming.
On screen: Jennifer and Joel play a 'childless couple who bury a box in their backyard, containing all of their wishes for an infant...'
...However, 'Soon, a child is born, though he is not all that he appears'
The actress plays a familiar role in the new picture: a new mother.
There is, of course, a twist in the plot as she and co-star Joel Edgerton play a 'childless couple who bury a box in their backyard, containing all of their wishes for an infant,' according to the film's official description.
However, 'Soon, a child is born, though he is not all that he appears.'
Looking good! Jennifer, 40, attended the CinemaCon Disney event at Caesars Palace in Las Vegas in April
Out and about: Jennifer Garner and husband Ben Affleck hold hands in Los Angeles on March 30 - less than a month after she gave birth
Busy mom: Jennifer Garner, with husband Ben and their daughters Violet, six, and Seraphina, three, on Mother's Day 2012
Also at the event was co-star, Odeya Rush, also dressed in red; director Peter Hedges; Disney sensation Bella Thorne; and actress Cheryl Hines.
The Odd Life of Timothy Green is set for release on August 15 - also Ben's 40th birthday.