Is it just us, or does Jennifer Garner get better and better looking by the day? The mother of three was spotting smiling as she hit the streets of Los Angeles following a trip to the gym yesterday, and we couldn’t help but gawk at her killer physique.

For her workout, the 44-year-old actress looked happier than ever in a black and grey striped tank top worn over a bright purple sports bra that showed off her super toned arms. She paired the pieces with cropped Tory Sport black leggings ($95; toryburch.com) that highlighted her muscular legs. The star finished off her outfit with mint green sneakers, a delicate gold necklace, chic oversize sunnies, and a tie-dye hoodie that she carried over her arm. Her brunette strands were pulled back into a simple ponytail.

Earlier this month, Garner sat down on the Today show to discuss how she and Ben Affleck make co-parenting their three children work since splitting in the summer of last year. And though she admits that the situation is far from conventional, it seems as if their family is doing better than ever. “We are definitely a modern family. We’re doing really well.”

RELATED: Jennifer Garner Discusses Relationship with Ben Affleck: “We Are Definitely a Modern Family”

See more celebrities hitting the gym in our gallery now.