Olivia Wilde's little boy, Otis, turned three on Thursday, and the actress couldn't contain her excitement.
The 33-year-old actress took to Instagram to share a super cute snapshot of her son enjoying an ice cream treat.
WATCH: Olivia Wilde Says Her Son Is a 'Meathead,' but Also Has 'the Greatest Rhythm'
"Happy 3rd birthday, magic boy. I love you even more than you love chocolate ice cream," Wilde wrote.
Wilde and fiancé Jason Sudeikis welcomed Otis in 2014 -- just a little over a year after getting engaged. The couple welcomed their second child, daughter Daisy Josephine, this past October.
Wilde shared a radiant photo holding both of her little ones on Saturday, giving fans a great look at Daisy's beaming smile.
WATCH: Olivia Wilde Shares Breastfeeding Photo With 'Drinking Buddy' Daughter Daisy
For more on the happy family, watch the video below.