Ariana Grande was in awe the primary time she noticed the Munchkins within the upcoming “Depraved” film … a lot in order that she stopped to take images of them in costume.

Ricardo Ludgero Souza, who performs a Munchkin in “Depraved,” tells TMZ … Ariana went full fan-girl earlier than her first scene with the Munchkins, asking the actors for pics and chatting them up on set earlier than cameras began rolling.

Ariana’s response got here as a whole shock to the actors enjoying the Munchkins, Ricardo says … she’s by far the most important superstar on set, however geeked out over the littlest individuals in Oz.

Sneak peeks of Munchkinland in “Depraved” look fairly superior … and it appears like Ariana was blown away too.

Ricardo spent most of his time on set filming with Ariana, and he says she completely personified her Glinda The Good Witch character … solely ever getting pissed off when she blew a take.