It's baby Luca's first photo shoot!

New mom Hilary Duff shared her first official family photo via Twitter on Thursday; a black and white pic that features husband Mike Comrie and their newborn son, Luca Cruz.

The former Disney star and her hockey player hubby welcomed their first little bundle of joy on March 20, and she's been busting her buns at the gym ever since!

Duff has become a regular at SoulCycle spin class in West Hollywood, but she hates to leave her baby's side for too long! The 24-year-old Tweeted Thursday, "Almost home to feed my little bambino!nice to get away for an hour to do something good for myself! But I miss his little face when I'm gone." Aww!