13/04/2012 08:35 BST

Hilary Duff Shares Family Portrait Showing Off Newborn Son Luca Cruz

Aw lookie here, it's Hilary Duff being all cute with her new bubba.

Don't it make your heart melt?

The actress showed off her newborn son Luca Cruz, as she shared her family portrait on Twitter by making it her new avatar.

Hils cradled her first born as she posed with husband Mike Comrie.

The tot was born last month and made his debut to the world on Twitter just under two weeks ago when "proud mamma on the loose" Hilary couldn't resist tweeting some snaps.

The star also revealed on Twitter that she's already trying to get back in shape following the birth.

She tweeted her personal trainer following a gym sesh: "@AlisiaLeibel holy sore body!!! @soulcycle kicked my booty!!!! Ouchieee."