Richard Gutierrez and Sarah Lahbati's son Kai celebrates 4th birthday

Celebrity mom Sarah Lahbati prepared a cartoon comic-themed birthday party for her son, Kai, who celebrated his fourth birthday yesterday, March 21.

On Instagram, Sarah shared some photos of the birthday party and wrote a sweet birthday message for Kai.

"Happy fourth birthday to our (not so) little ray of sunshine, bubba Kai," Sarah wrote in the caption of her post.

"We are so lucky and blessed to have you in our lives. We missed dada a lot this year as he is currently working but looking forward to being complete soon," the actress added.

Families and some of their celebrity friends also sent their birthday greetings in the comment section including Kai's auntie Ruffa Gutierrez and uncle Raymond Gutierrez.

Kai is the second son of Sarah with her husband Richard Gutierrez.

Meanwhile, checkout some adorable baby photos of Kai in this gallery.