Lyric discussion by MusicObsesser 

Cover art for Sippy Cup lyrics by Melanie Martinez

For the part "Kids are still depressed when you dress them up," I think that it means that even if it doesn't seem like it, some one can still be depressed. For example someone could be depressed (Kids are still depressed) even if they hide it, with a fake smile or just pretending they're ok (When you dress them up)

My Interpretation