Bobby Cannavale
Credit: Marc Piasecki/Getty

Just call Bobby Cannavale and Rose Byrne's baby boy a future Mixed Martial Arts pro. At only 4 months old, little Rocco already appears to be tackling teddy bears, and the Vinyl star couldn't help but share a snap of the pseudo "MMA" action on Instagram Monday.

"THE BEAR'S IN TROUBLE! THE BEAR IS IN TROUBLE!!!!! #mmafighter #theroc," Cannavale jokingly captioned the photo, which showed the baby boy lounging in a blue top and pineapple-print shorts on an off-white fur rug. As Rocco crawls along a blue quilted blanket, a teddy bear gets trapped underneath him.

While the couple doesn't post photos of their baby's face often, this is just the latest time Cannavale has shared a shot of their son (and shown us he's one stylish tot). A couple of weeks ago, the actor put up a snap of Rocco sporting khaki pants and a printed top, captioning it, "What the hell is cuter than tiny khakis??." Few things, for sure.

Longtime couple Cannavale and Byrne welcomed their son in February. Since then, the baby boy has used his stylish ensembles to pay tribute to Prince, show he's a true Jets fan and even get into Miami Vice mode. Talk about a total fashionisto.