Hilary Duff and Mike Comrie reunited to celebrate their son Luca's birthday.
Hilary Duff, Mike Comrie and their son Luca (c) Instagram
The former married couple proved they are still a team when it comes to their little boy - who turned four years old on Sunday (20.03.16) - when they gave him a celebration to remember and taught him how to ride a bike together.
Hilary posted a touching picture of Luca wearing a bicycle helmet flanked by his grinning parents and captioned the picture of the family: "We are so proud of this boy!"
The pair were also joined by their extended family at a birthday dinner at Hilary's mother's home, as a series of Snapchat posts - including a group photo - showed.
Sister Haylie Duff wrong on one photo: "Family chaos at Mama Suz's house."
The 28-year-old actress and 35-year-old retired hockey star - who share joint custody of Luca - split in 2013 and finalised their divorce last month.
The couple had a pre-nuptial agreement and Hilary was granted permission to keep their Beverly Hills mansion, although she had to buy Mike out for $2,408,786 and she keeps any of their other shared property, but Mike gets his Bentley coupe and Mercedes G-Class SUV.
Speaking previously about their post-split relationship, Hilary insisted the couple are still extremely close, especially for the sake of their kids.
She explained: "We have such a great kid. And we're both so obsessed with him.
"We are good friends and we laugh a lot. And we have a great communication and we share pictures when one is not with Luca. He's great, we are great and we keep on trucking.
"Mike and I were very in love when we met. We both really wanted to get married. I'd been working since the age of 11 or 12, so making that choice at a young age seemed right for me. Maybe it wasn't, but we spent the majority of our time together really happy."
Tagged in Hilary Duff