Where did you find that dress/outfit? It is beautiful!
'Vestito' = ve-STI-to. 'Bellissimo' = bel-LIS-si-mo.
Use this as a genuine fashion compliment at social events. Italians are highly fashion-conscious and appreciate specific, sincere compliments. Admiring someone's clothing choice shows visual attention and taste.
'Trovare' (to find) is used for finding items in shops. 'Dove hai trovato?' = 'where did you find?'. 'Quel vestito' uses the demonstrative adjective 'quel' (that) for a masculine noun. For feminine: 'quella gonna' (that skirt).
Quel colore ti sta benissimo.
That colour suits you wonderfully.
'Stare bene a qualcuno' = to suit someone — very useful Italian expression
Sei vestito/a in modo elegantissimo.
You are dressed very elegantly.
Overall elegance compliment
Quella giacca è favolosa. È di un brand italiano?
That jacket is fabulous. Is it an Italian brand?
Specific item + possible Italian brand pride
Fashion is a serious business in Italy — even at casual parties, Italians dress with care and thought. 'Fare bella figura' (making a good impression through appearance) is a cultural imperative. Vintage markets ('mercati vintage') in cities like Florence, Milan, and Rome are treasure troves visited by fashion-savvy Italians.