What are cousins for if not to get into a little trouble?
Haylie Duff posted an adorable pic of her 2-year-old daughter, Ryan, posing on the hood of a car with sister Hilary’s son, Luca, on Monday.
WATCH: Hilary Duff Shares the First Present Her Son Ever Picked Out For Her
But don’t be fooled by those innocent smiles! Turns out 5-year-old mischief-maker Luca was teaching little Ryan how to climb onto cars.
“This is AFTER Luca taught her to scale to the top of @hilaryduff car!” Haylie, 32, captioned the cute snap. “?❤️ These like cousins are gonna be trouble ?♀️ #HerIdol #WantsToBeJustLikeHim.”
Hilary, 29, later reposted the pic with an apology for her sister.
“Cousins stick together,” she wrote. “Dubs trubs @haylieduff I'm apologizing on Luca's behalf for teaching that angel of yours that it's cool to climb on cars ?.”
In March, Hilary opened up about co-parenting with her ex-husband, Mike Comrie. The pair finalized their divorce last year, following six years of marriage.
WATCH: Hilary Duff Says Being Divorced ‘Sucks’
“Some of my friends tell me, 'God, it must be so nice, you get a break from your kid because you share him,'” she told Redbook magazine. “I'm divorced, and it sucks. Well, it did suck for a while; now it's just normal. But it's true, I do get a break.”
See more on the Younger star below.