Quería llevar la blusa con la rebeca, pero al final me puse el chándal y las pantuflas porque me quedé en casa.

Quería is the imperfect of querer, and here it expresses a past intention or plan: I wanted / I was planning to wear.

Using quise would usually sound more like I tried to or I did want to, often focusing on a completed moment. In this sentence, the speaker is describing what they had in mind before changing plans, so quería fits better.

• Quería llevar la blusa... = I wanted / was going to wear the blouse...
• Quise llevar la blusa... = I tried to wear the blouse... or I did want to wear it... depending on context

In Spanish, llevar can mean to wear in the sense of to have on.

So:

• llevar una blusa = to wear a blouse
• llevar gafas = to wear glasses

This is very common in Spanish. English often uses wear, while Spanish often uses llevar for the state of having something on.

They are related, but not the same:

• llevar = to wear / to have on
• ponerse = to put on

So:

• Quería llevar la blusa con la rebeca = the outfit the speaker intended to wear
• me puse el chándal y las pantuflas = what the speaker actually put on

A helpful way to remember it:

• ponerse = the action of dressing
• llevar = the result or appearance

Because ponerse is the reflexive verb meaning to put on oneself.

• poner = to put
• ponerse = to put on

So:

• Puse el libro en la mesa = I put the book on the table
• Me puse el chándal = I put on the tracksuit

The me shows that the action is being done to yourself.

Spanish uses the definite article with clothing much more often than English does.

So Spanish naturally says:

• la blusa
• la rebeca
• el chándal
• las pantuflas

Even when English might say:

• I put on tracksuit bottoms and slippers
• I wanted to wear a blouse with a cardigan

In Spanish, the article is often simply the normal choice with clothes, especially when talking about specific items in the situation.

Con means with, and here it suggests the blouse and cardigan are part of the same outfit: the blouse with the cardigan.

• la blusa con la rebeca = the blouse together with the cardigan
• la blusa y la rebeca = the blouse and the cardigan

Both can work, but con sounds a bit more like talking about how the clothes go together.

Rebeca means cardigan.

In Spain, it is a normal word, although some speakers may also use other terms depending on the region or personal preference. For a learner of Peninsular Spanish, rebeca is a useful word to know.

So:

• una rebeca = a cardigan

Al final means in the end, in the end though, or after all.

It shows a contrast between the original plan and what actually happened:

• plan: Quería llevar la blusa con la rebeca
• reality: pero al final me puse el chándal...

So it marks the final outcome.

Quedarse en casa means to stay at home.

That is slightly different from just saying to be at home.

• me quedé en casa = I stayed at home
• estuve en casa = I was at home / I spent time at home
• estaba en casa = I was at home as background description

Here the idea is not just location, but the decision/result of staying home, which explains why the speaker changed clothes. So me quedé en casa is the most natural choice.

This is a very typical Spanish contrast:

• quería = background intention, an ongoing past idea
• me quedé = a completed event/result

So the sentence sets up a past plan and then gives the event that changed things:

• Quería... = I wanted / I was planning...
• me quedé en casa = I ended up staying home

This imperfect + preterite combination is extremely common in narration.

In Spanish, chándal is usually treated as a singular noun meaning tracksuit.

So:

• el chándal = the tracksuit

Even though a tracksuit can consist of more than one piece, Spanish commonly refers to it as one item. That is why the sentence says:

• me puse el chándal y las pantuflas

Pantuflas means slippers.

It refers to soft indoor footwear worn at home. In Spain, learners may also hear other expressions such as zapatillas de estar por casa, depending on the speaker or region, but pantuflas is clear and understandable.

Porque means because and introduces the reason:

• me puse el chándal y las pantuflas porque me quedé en casa
• I put on the tracksuit and slippers because I stayed at home

So the reason for wearing more casual, home clothes is that the speaker did not go out.

Not in this context. Although llevar can sometimes mean to take / carry, with clothing it often means to wear.

So here:

• quería llevar la blusa = I wanted to wear the blouse

The surrounding context makes that clear, especially because the sentence later talks about what the speaker put on instead.