الفستان ده من الحرير.

A common Egyptian pronunciation is:

el-fostān da men el-ḥarīr

A few notes:

• الفستان → el-fostān = the dress
• ده → da = this
• من → men = from / of / made of
• الحرير → el-ḥarīr = the silk

The ḥ in ḥarīr represents the Arabic letter ح, which is a deeper, breathier h sound than regular English h.

ده means this.

In Egyptian Arabic, the demonstrative usually comes after the noun, not before it. So:

• الفستان ده = this dress

This is different from English, where we say this dress, not dress this.

That is the normal Egyptian Arabic pattern with this/that:

• الولد ده = this boy
• البنت دي = this girl
• البيت ده = this house

So الفستان ده literally looks like the dress this, but the natural English translation is this dress.

In Arabic, the verb to be is usually not stated in the present tense.

So:

• الفستان ده من الحرير literally = this dress from silk
• natural English = This dress is made of silk or This dress is of silk

This is completely normal in Arabic. The idea of is is understood automatically.

Yes, من often means from, but in this kind of sentence it also means made of or of.

So:

• من الحرير = of silk / made of silk
• من القطن = of cotton / made of cotton
• من الخشب = of wood / made of wood

So even though من often translates as from, here the best English meaning is made of.

In Egyptian Arabic, when you use this with a noun, the noun is usually definite, so it normally takes الـ.

So Arabic says:

• الفستان ده

Even though this is literally something like the dress this, the correct English translation is simply this dress.

This is just how Arabic marks definiteness in this structure.

Here الحرير means silk as a material, and Arabic often uses the definite article with materials and abstract nouns in places where English does not.

So:

• من الحرير = of silk / made of silk
• من القطن = of cotton
• من الجلد = of leather

English usually drops the here, but Arabic often keeps it.

Because فستان is grammatically masculine in Arabic.

In Egyptian Arabic:

• ده is used with masculine nouns
• دي is used with feminine nouns

So:

• الفستان ده = this dress
• but الشنطة دي = this bag

Even if a dress might feel like a feminine object culturally, what matters in Arabic is the noun’s grammatical gender, and فستان is masculine.

Yes, this sentence is Egyptian Arabic.

In Modern Standard Arabic, you would more naturally say:

• هذا الفستان من الحرير

Key differences:

• Egyptian: الفستان ده
• MSA: هذا الفستان

So Egyptian usually puts this after the noun, while MSA usually puts it before the noun.

Also, Egyptian pronunciation differs from MSA pronunciation, especially for الـ, which is often pronounced el- or il- in Egyptian.

Yes. You will see both spellings:

• ده
• دا

They represent the same Egyptian word da = this.

Why two spellings? Because colloquial Egyptian Arabic is not spelled as rigidly as MSA, so writers often choose different ways to represent the same spoken form.

So both are common in informal writing.

You add مش before the phrase you want to negate:

• الفستان ده مش من الحرير
  = This dress is not made of silk

This is the normal Egyptian way to negate a nominal sentence like this one.

In Egyptian Arabic, you can often make it a question just by using question intonation:

• الفستان ده من الحرير؟
  = Is this dress made of silk?

You do not need to add a special word like English do/is/are in many everyday questions.

Not for the same normal meaning.

The natural Egyptian way to say this dress is:

• الفستان ده

If you start with ده, it can sound like a different structure, such as this is the dress..., depending on context. So for a beginner, it is best to keep:

• noun + ده/دي/دول

So here, stick with:

• الفستان ده من الحرير

The pattern is:

[noun] + [this/that] + [description]

In this sentence:

• الفستان = noun
• ده = this
• من الحرير = description (made of silk)

So the full structure is:

• الفستان ده = this dress
• الفستان ده من الحرير = this dress is made of silk

This is a very common Egyptian sentence pattern.