Hilary Duff & Mike Comrie: Birthday Party with Luca!

Hilary Duff rocks some chic pants after attending a birthday party on Saturday (March 9) in Studio City, Calif.

The 25-year-old actress was accompanied by her husband Mike Comrie and her 11-month-old baby boy Luca.

PHOTOS: Check out the latest pics of Hilary Duff

The day before, Hilary did some shoe shopping while it was raining in Beverly Hills.

Earlier in the week, Hilary carried Luca while dropping him off at a friend’s place for a play date in L.A.

30+ pictures inside of Hilary Duff dropping Luca off at a friends place…