December 08, 2011 11:00 AM

Milton Ventura/Broadimage

Sweater set!

Selma Blair snuggles up to her little man, 4-month-old son Arthur Saint, during a Wednesday day trip to The Grove shopping center in Los Angeles.

“He smiled the first week. He rolled over and he’s starting to crawl,” the actress, 39, tells PEOPLE of her baby boy with boyfriend Jason Bleick.

“I’m so in love with him … He makes me happy every day.”

RELATED: Selma Blair ‘Going to Be Bald’ After Post-Partum Hair Loss

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