Suit someone to a T

Fit someone to a T / Fit like a glove / Be a good fit / Down to a T


Andare a pennello

Calzare a pennello


Meanings
To suit someone exactly

Examples
His nickname "Whitey" suits him to a T since he's a baker and is always white with flour
Il soprannome "Il Bianco" gli calza a pennello dato che fa il fornaio ed è sempre bianco di farina

She looked perfect for the occasion: her new hairdo suit her to a T and her outfit fit her like a glove
Era perfetta per l'occasione: la nuova pettinatura e il nuovo vestito le andavano a pennello

She speaks four languages, she's an art expert and knows Venice, her hometown, down to a T: being a tourist guide suits her to a T
Parla quattro lingue, è un'esperta d'arte e conosce Venezia, la sua città natale, alla perfezione: il lavoro di guida turistica le calza proprio a pennello

This example fits to a T
Questo esempio calza proprio a pennello

Oscar's new job suits him to a T. It's really perfect for him
Il nuovo lavoro di Oscar gli calza a pennello, è proprio perfetto per lui

Origin

"To a T", which is sometimes written "to a tee", is an old phrase and is first recorded in James Wright's satire The Humours and conversations of the town, 1693: "All the under Villages and Towns-men come to him for Redress; which he does to a T."
Most likely, the T could be the first letter of the word tittle. A tittle is a small stroke or point used in orthographic details, such as the dot over an i or a j or such as an accent mark. The consequent sense being "to the smallest detail."
The best reason for believing that this is the source of the T is that the phrase "to a tittle" existed in English more than a century before "to a T", with the same meaning. For example, in Edward Hall's Chronicles, circa 1548, we find: "I then... began to dispute with my selfe, little considerynge that thus my earnest was turned euen to a tittyl not so good as, estamen."