The popularity of selfies in real life carried into GTA 5 and now, through the help of a mod, are now available in GTA 4.
According to the creator, the mod "makes it possible take [sic] some 'selfies' in GTA IV, something similar to what we have in V, but here the photos are not related to the mobile phone, all script action."
So yeah, next time Nico wants to capture that special moment when he's brutally murdering someone, he can now.
Selfies taken in-game are saved in the game Scripts folder (sElfie files folder).
