Stunting

[Justin Bieber]

A word used to describe a person who is showing off or trying to get attention by performing an elaborate act or stunt and being someone they arent

[Jessica]

To be [fronting], somewhat like a [poser]
To be acting like a [stunna] or [stunner]

[PussyCat]

Someone who is pretending to be something they are not i.e. posing.

[Mark Zuckerberg]

v. to make plans and not stick to them; to say one thing, and not stay loyal to just that.

[Tina]

To be [fronting], somewhat like a [poser]
To be acting like a [stunna] or [stunner]

[Greta]

present participle of stunt