Sharing a video of her little squirt giving her a shower, Hilary seemed to see the funny side after being soaked by her two-year-old.
As Hilary tells Luca he "can't spray" her, a cheeky Luca points the hose directly at his mum's face and replies "sure".
Before Hilary can even question the tot, Luca doesn't hesitate and blasts the water straight in Hilary's direction.
Hitting his mum face on, little Luca pushes his luck as he continues to spray Hilary before she laughs and attempts to run away.
Lucky for Luca he has a pretty cool mum who seemed to enjoy his little mischievous prank. That or his cuteness helped him get away with it!
Hilary gave birth to her little boy back in 2012 after she became pregnant while with her former husband Mike Comrie. After three years of marriage, Hilary announced she and Mike had split earlier this year.
Recently, Hilary spoke out about their split admitting it had been a "very difficult" time for her.
She said: "I'm separated from my husband right now, which has been a very difficult thing to go through, but we have a lot of love for each other and we have this beautiful baby."
Now, Hilary is focusing on her music as she recently announced her comeback single ' Chasing The Sun', much to the delight of her fans.
After taking a break from music, Hilary is back with new material and has her sights set on chart success once more.
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Watch Hilary's video for new single 'Chasing The Sun' here: