Hilary Duff and Luca Attending Babies First Class | Pictures

Hilary Duff took her baby boy, Luca Comrie, to another Babies First Class session in Sherman Oaks, CA, yesterday. Hilary had a huge smile on her face as a playful Luca crawled around with a pacifier in his mouth. The mother-son duo have been frequenting the class for new parents and babies, but Luca's attentive mom and dad have also been keeping up a busy social schedule.

Hilary and Mike Comrie came out to support Reese Witherspoon at the March of Dimes luncheon in Beverly Hills last week. Wearing a dress by Camilla and Marc, she posed with her husband and socialized with fellow new moms Elizabeth Banks and Megan Fox. Hilary has continued to focused on fitness these last few months, but a toned figure isn't the only appearance-related revelation the actress can be proud of. Hilary posted a picture of her new, extension-free hair, crediting her luscious locks to prenatal vitamins.