We FINALLY know Justin Timberlake's son's name!

Justin Timberlake and his wife Jessica Biel until now have been VERY secretive regarding their second child.

There were rumours that they'd had a second child, but we hadn't heard anything from the pair regarding this. 

FINALLY, we have an update!

Justin appeared on The Ellen Show and revealed baby number two does exist and his name is Phineas.

Watch the clip here: