Zoe Saldaña and Selena Gomez had the most heartwarming reactions ... burying her face in her hands and squealing, with glee, “I can’t believe it!” “I am so grateful and honored ...

Selena Gomez and Benny Blanco have even more reason ... prompting the other person to shout in glee and declare that the bauble is "beautiful." Gomez and Blanco have known each other for years ...