Hilary Duff brought little Luca Comrie to a Babies First Class session in Sherman Oaks, CA, before the duo went shopping in Studio City yesterday. Hilary toted her plaid-clad baby boy around after attending the class for new parents and babies. The pair then visited a children's store, where Hilary picked out new duds for her growing 8-month-old. Hilary already showed off some of Luca's Winter gear when she tweeted a picture of her "main men" on a recent trip to Canada. Hilary's husband, Mike Comrie, took Luca sledding while celebrating Thanksgiving with their family.