First a peek at his feet, and now here's our first look at Hilary Duff's newborn son Luca!

Hil tweeted the pic this afternoon and wrote, "Baby Luca, 2 weeks old." When the former Disney starlet isn't busy spending time with her two-week-old, she's been hitting the gym to shed the post-pregnancy pounds. Yesterday she tweeted, "Did a little Pilates today. Felt so good to stretch!" Sounds like one motivated mommy!