The Richie-Maddens

They're now a family of four! See how Joel Madden and Nicole Richie dote on daughter Harlow and son Sparrow

SHE SPIES!

The perceptive little girl spots the snappers while out for a walk with Mom in December. Richie, 27, told PEOPLE that since Harlow's birth, her priorities have changed. "She's never out of my mind. I stop doing things for me anymore. Everything is for her."