Se la sarta avesse finito l’orlo ieri, oggi indosserei già il vestito nuovo.

This is a contrary-to-fact or unreal conditional.

It describes a situation that did not happen:

• Se la sarta avesse finito l’orlo ieri = if the seamstress had finished the hem yesterday
• oggi indosserei già il vestito nuovo = today I would already be wearing the new dress

So the speaker is imagining a different past event and its imagined present result.

A very common pattern in Italian is:

• Se + congiuntivo trapassato, condizionale presente

when the unreal past condition would have a result now.

Because after se in this kind of unreal conditional, Italian uses the trapassato congiuntivo.

Avesse finito is the congiuntivo trapassato of finire.

It is formed with:

• imperfect subjunctive of avere or essere
• past participle

So here:

• avesse = imperfect subjunctive of avere
• finito = past participle of finire

Together: avesse finito = had finished in this unreal-if structure.

Italian does not normally use the same tense choices as English literal word-for-word. Even though English says if she had finished, Italian specifically wants se + congiuntivo trapassato in this structure.

Because the result is hypothetical, not real.

Indosserei is the condizionale presente of indossare = I would wear / I would be wearing.

The logic is:

• the condition did not happen
• therefore the result is only imagined

So Italian uses the conditional in the main clause.

Here it is present conditional, not past conditional, because the imagined result refers to oggi = today, a present-time consequence.

Because the sentence is talking about a present result of an unreal past condition.

Compare:

• Se la sarta avesse finito l’orlo ieri, oggi indosserei già il vestito nuovo.
  = If the seamstress had finished the hem yesterday, today I would already be wearing the new dress.

• Se la sarta avesse finito l’orlo ieri, avrei indossato il vestito alla festa.
  = If the seamstress had finished the hem yesterday, I would have worn the dress to the party.

In the first sentence, the consequence is now (oggi), so Italian uses condizionale presente: indosserei.

In the second kind of sentence, the consequence is also in the past, so Italian uses condizionale passato: avrei indossato.

Orlo means hem.

In clothing, it refers to the finished edge at the bottom of a garment, sleeve, skirt, dress, trousers, etc.

So finire l’orlo means something like:

• finish the hem
• complete the hemming
• finish sewing the hem

The apostrophe in l’orlo is just because lo becomes l’ before a vowel:

• lo orlo → l’orlo

La sarta means the seamstress or dressmaker.

It refers specifically to a woman who sews or alters clothes.

Related words:

• sarto = tailor / male dressmaker
• sarta = seamstress / female dressmaker

In this sentence, la sarta is the person doing the hem.

Because the sentence contrasts:

• an unreal action in the past: ieri
• an imagined consequence in the present: oggi

That contrast is very important to the meaning.

The speaker is saying:

• yesterday the seamstress did not finish the hem
• as a result, today I am not wearing the new dress
• but in the imagined version, if she had finished it yesterday, today I would already be wearing it

So the tense combination matches the time relationship perfectly.

Già means already.

It suggests that by today, the speaker would have expected to be wearing the dress.

So:

• oggi indosserei il vestito nuovo = today I would be wearing the new dress
• oggi indosserei già il vestito nuovo = today I would already be wearing the new dress

The già adds the idea of by now or already at this point.

Its position is natural here before the direct object:

• indosserei già il vestito nuovo

That is a very normal placement.

Because the speaker is referring to a specific dress already known in the context: the new dress.

• il vestito nuovo = the new dress
• un vestito nuovo = a new dress

The definite article il tells us this is not just any dress. It is a particular dress that the speaker has in mind.

Yes, vestito can mean different things depending on context.

Common meanings include:

• dress
• outfit
• suit
• sometimes clothes/clothing in broader contexts

Here, because of la sarta, l’orlo, and il vestito nuovo, the meaning is clearly a dress or a specific garment being altered.

If the context were different, vestito might be understood differently.

The given order is natural, but Italian allows some flexibility.

Original:

• Se la sarta avesse finito l’orlo ieri, oggi indosserei già il vestito nuovo.

You could also say:

• Oggi indosserei già il vestito nuovo se la sarta avesse finito l’orlo ieri.

That still means the same thing.

You could also shift adverbs for emphasis, though some placements sound more natural than others. The original sentence sounds smooth and standard.

Yes. Both are possible.

• finito l’orlo ieri
• finito ieri l’orlo

The first one is probably the more neutral and natural order in many contexts, but the second is grammatically fine too.

Italian often allows this kind of movement with adverbs like ieri, especially when no ambiguity is created.

The comma is standard and helpful here because the sentence begins with the if-clause:

• Se la sarta avesse finito l’orlo ieri, oggi indosserei già il vestito nuovo.

In Italian, punctuation with conditionals is somewhat flexible, but this comma is very normal and makes the structure clearer.

If the order were reversed, you might often see:

• Oggi indosserei già il vestito nuovo se la sarta avesse finito l’orlo ieri.

In that version, a comma is usually not needed.

Not if you want the same standard if construction.

Here se simply means if, and it is the normal word to introduce a conditional clause.

You could rephrase the sentence in other ways, but for this kind of direct hypothetical condition, se is exactly the right choice.

The infinitive is indossare, which means:

• to wear
• to put on

In this sentence, it means to wear.

So:

• indosso = I wear / I am wearing
• indosserei = I would wear / I would be wearing

Because the sentence is hypothetical, the conditional form is needed.

Yes, very naturally.

Even without any extra emotional words, this kind of unreal conditional often implies:

• regret
• annoyance
• disappointment
• frustration

The speaker is basically saying that because the seamstress did not finish the hem yesterday, they cannot wear the new dress today.

So the sentence is not just grammatical; it also carries a very natural tone of too bad that didn’t happen.