Hilary Duff and Ex-Husband Mike Comrie Celebrate Son Luca’s 4th Birthday Together: ‘We Are So Proud of This Boy’

by Rachel McRady 2:18 AM PDT, March 21, 2016
Photo: Instagram

Anything for Luca! Amicable exes Hilary Duff and Mike Comrie continued to show what co-parenting is all about as the former couple reunited for their son Luca's 4th birthday over the weekend.

"We are so proud of this boy!" Duff captioned a sweet family photo with her little boy and Comrie.

RELATED: Hilary Duff and Mike Comrie Finalize Their Divorce

Earlier in the day, the Younger star shared a sweet pic of her son eating birthday cake to Instagram, writing, "You….are magic my little big boy. Happy 4th birthday. My heart just explodes for you."

The whole family got together to celebrate Luca's birthday with aunt Haylie Duff, who shared an adorable photo with sister Hilary, Luca, and her daughter, Ryan.

MORE: Hilary Duff Shows Off Her Smokin' Bikini Body in Hawaii With Mike Comrie

"Celebrating my sweet nephew Luca today! I can't believe he is 4! #HappyBirthday to the sweetest boy & best big cousin. We love you Luc! (also Ryan has a huge mouth full of food in this pic haha)," Haylie captioned the snap.

In February, Hilary and Comrie finalized their divorce, more than two years after they announced their separation. A month earlier, the Disney Channel alum opened up about her relationship with the father of her child.

"We have such a great kid, and we're both so obsessed with him," she told Ellen DeGeneres at the time. "We are good friends and we laugh a lot, and we have a great communication."