Olivia Wilde and Jason Sudeikis have welcomed another member to their family -- and he's already covered in hair.

The actress announced on Instagram that she and her fiance adopted a rescue pup named Elvis, and needless to say, the new "King" of the household is ridiculously adorable.

"Ladies and gentlemen, meet the heartbreaker formerly known as Maxamillion, now christened by his new human brother as Elvis Sudeikis-Wilde. 3 years young and 10 lbs of pure goodness," the actress wrote while sharing an image of the little guy.

"He's lived a pretty harrowing life so far, and we are so lucky he adopted us as his new family, so we can treat him like the king he was born to be. Thanks to @barcshelter we found the missing member of our brood," she added.

The A-list couple already have an adopted dog in their household named Paco.

"This is our second adopted furry son and we cannot recommend it enough," wrote Olivia. "There are so many animals looking for homes. This little guy was next on the kill list at a shelter in Texas not too long ago! 😫. Please consider saving a dog today. ❤ #adoptdontshop #Elvishasenteredthebuilding."

Olivia later shared an image of Paco and Elvis.

"Rescue bros. ❤❤ #PacoandElvis," she captioned the shot of a curious Elvis and a sleeping Paco.

In having a little fun with Elvis, she also shared a photo of the pooch looking over a miniature version of Jason.

"AGGGHHHH JASON WATCH OUT!!! #giantdogortinyman," she hilariously wrote.

Elvis clearly already runs the Sudeikis-Wilde household.