to fit like a glove
Aquele vestido caiu como uma luva nela, parecia feito sob medida.
That dress fit her like a glove, it looked tailor-made.
The image speaks for itself: a well-made glove follows every finger and hugs the hand exactly, with no gap and nothing to spare. To say something "falls like a glove" (cair como uma luva) is to say it fits that perfectly.
Falando's Idiom Trainer teaches you to recognize idiom meanings and create sentences using them, so you can speak like a Brazilian.
