The 40-year-old actress, who shares her first child with boyfriend Ryan Gosling, gave birth to the tot on September 12 and looked effortless as she stepped out in a long black cardigan and loose fitting black trousers, reported Daily Mirror.
Mendes has reportedly been using a low carb and high protein meal delivery service to help her shift the extra pounds.
“Eva’s flattered that people think she looks good, but she’s not taking complete credit for it. She knows genetics plays a big role. She has great genes,” a source said.