Singer, actress and writer Hilary Duff shared a photo of her dog on Instagram posing at the front door of their home.

Without noticing, her son Luca photobombed the picture looking through one of the windows next to the door while he was coovering his mouth with his hand.

"I spy a little Luca," Hilary Duff wrote on the photo.

Recently, Hilary Duff told People magazine she has an obsession with his 19-month-old son even though she thought it was going to be hard to raise a baby boy.

"I actually had this strong intuition that I was having a boy, and I was so excited, but I grew up with a sister and I was like, 'I don't know what to do with a boy!" Hilary told People during her "The Real Girl's Kitchen" book signing in Los Angeles.

Hilary Duff shared that she wouldn't mind welcoming a new baby or even a third one.

"If I had another boy, I would be happy, but I would like to try for a girl and I'm not sure that I want to have three kids," Duff said.

"I love that I do an interview &people ask if I want more kids.. I say yes. Not now thought and all if a sudden I'm "trying" for a girl.WHAT?," she tweeted after the interview was published. "It's ridiculous....The only baby I'm working on is my album"