Flamante, Spanish for “great-looking” or “splendid” — perhaps, a more modern version of which would be, “awesome!” — comes from the Latin flamma, meaning, “flame.”
From that same root, we get the English, flame. Completely unsurprisingly.
If you’re wondering how we get from “fire” to “sexy”, then all we need to do is remember one word.… flaming.
Theh fl‑m root is clearly visible in both.