The 'Growing Pains' star is gone, but never forgotten.
Robin Thicke is paying tribute to his beloved father, Alan.
The "Blurred Lines" singer took to Instagram on Friday, sharing two photos in honor of the late Growing Pains star 10 days after what would have been his 70th birthday.
WATCH: Alan Thicke's Son Carter Credits Leonardo DiCaprio for Helping Him Get Through Dad's Death
"Missing the OG today," Robin, 40, wrote. "First Bday without him. Love you Pops."
Another snapshot, captioned, "That's me! Haha," showed Alan picking up a young (and very sleepy!) Robin in his arms.
Robin's posts come just two days after the late actor's wife, Tanya, and son, Carter, paid tribute with touching photos and messages of their own, which you can see below:
WATCH: Alan Thicke's Son Carter Shares Sweet Family Memories
As ET previously reported, Alan died in December after suffering a heart attack while playing hockey with Carter at an ice skating rink in Burbank, California. Two months later, Carter opened up about his dad's meaningful last words during an exclusive sit-down interview with ET.
Hear highlights in the video below.