Hilary Duff: Birthday Parties With Baby Luca!

Hilary Duff picks up her adorable 13-month-old son Luca on their way to a friend’s birthday party on Sunday morning (April 21) in Westwood, Calif.

The day before, the 25-year-old actress and her hubby Mike Comrie took Luca to a different birthday party at Jack Osbourne‘s house in Los Feliz.

PHOTOS: Check out the latest pics of Hilary Duff

Earlier in the week, Hilary was spotted chatting on her cell phone as she headed to a hair salon in Beverly Hills.

Also pictured: Hilary leaves a gym on Tuesday (April 22) in Toluca Lake.

FYI: Hilary is wearing Heartloom‘s Dorothy sweater. Hil is using her bumbleride stroller.

40+ pictures inside of Hilary Duff and her family out and about…