February 21, 2015 02:00 PM

Looking at Million Dollar Arm star Lake Bell, you’d have no idea that she gave birth to a baby girl in October.

The actress attended the 8th Annual Women in Film pre-Oscar party at Hyde Sunset Kitchen + Cocktails in Hollywood on Friday and revealed her post-baby body in a stylish Max Mara dress.

“I think that when you have a little one, you spend a lot of energy just being a mother,” Bell, 35, told PEOPLE when asked how she got her figure back. “All the jobs that come with being a mom like breastfeeding, it’s been what’s going on the last couple months.”

JB Lacroix/WireImage

Though Bell and husband Scott Campbell have yet to release the name of their daughter, Bell couldn’t be happier about being a new mom. “I can’t complain,” she said. “I miss her every second. I miss her right now.”

On top of raising a newborn, Bell has been busy at work, acting in the new Netflix series Wet Hot American Summer and preparing for her second outing as director with The Emperor’s Children, set to star Jeff Bridges.

On balancing work and motherhood, “It’s a whole thing,” said Bell. “But I’m excited that my daughter can look up to me as a working mom. I want her to grow up feeling empowered and self-reliant.”

— Matthew Cole Weiss

RELATED GALLERY: Body After Baby — Star Moms Who’ve Bounced Right Back

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