Ooooh! I'd like to tie that to the idea from @jidblogger that Glimmer makes a habit of coming up with more and more stupid titles for Catra.
Catra: "Everything is prepared for the festival, your royal sparkliness."
Glimmer: "And just in time. You have done an amazing job, Catra."
Catra, trying and failing to look like the praise doesn't effect her: "Eh, a festival is not too different from a battle. Marching, pyrotechnics and make sure the rank-and-file has enough provision."
Glimmer: "Those are children, Catra."
Catra: "Eh, soldiers, children, ration bars, juice boxes: Some difference."
Glimmer: "Either way, I'm very thankful. And as your reward..."
Catra: "Oh no you don't!"
Glimmer: "As your reward I now pronounce you..."
Catra: "Festival general supremo or something equally dumb, right? Don't you think this bit is getting old, Sparkles?"
Glimmer: "Shimmerfur the cat fairy!"
Glimmer, not quite able not to crack up: "Look, we have a costume and everything."
Frosta, extremely smug: "I helped!"
Glimmer: "The children will love it. We have written a song for you, and there is a little dance..."
Catra: "Glimmer, I'm saying this with all the sincerity I can muster: Remember when I yeeted you into space? I'm fully prepared to do that again."
Glimmer: "But Catra, this is for the children. You don't want to disappoint the children, do you?"
Catra: "I'll tell you what I want to..."
Adora and Scorpia. "WE HEARD THERE WAS A COSTUME!"
Catra: "...I'm not getting out of this one, am I?"