Olivia Wilde and Jason Sudeikis' son is getting so big!
On Tuesday, Nov. 17, Olivia, 31, took to Instagram to share a cuter than cute new photo of her 18-month-old son, Otis, helping her put on makeup!
"My makeup guy may be a little young, but what he lacks in experience, he makes up for in drool," the actress captioned the sweet black and white snapshot.
Olivia and her fiancé, Jason, 40 — who first started dating in 2011 and became engaged in January 2013 — welcomed Otis, their only child, in April 2014.
Click through the gallery below to see more of Hollywood's cutest kids!