Is the word famosas the same in Brazilian and European Portuguese?

Yes

The word "famosas" is identical in meaning, spelling, and grammar in both Brazilian and Continental Portuguese. The only differences are phonetic:

• Pronunciation: In Brazilian Portuguese, the "s" at the end of the word is often pronounced as a soft [s] (as in "sun"), though in certain regions like Rio de Janeiro, it may be pronounced as [ʃ] (as in "she"). In Continental Portuguese, the "s" at the end of a word is almost always pronounced as a "sh" [ʃ] sound. Additionally, Brazilian Portuguese vowels are generally more open, while Continental Portuguese vowels are more closed or reduced.

Brazilian Portuguese Examples

1. Essas cantoras famosas estão no Brasil. (These famous singers are in Brazil.)
2. Elas são muito famosas no YouTube. (They are very famous on YouTube.)
3. As ruas famosas do Rio são lindas. (The famous streets of Rio are beautiful.)
4. Vi duas atrizes famosas no shopping. (I saw two famous actresses at the mall.)
5. Essas marcas famosas são muito caras. (These famous brands are very expensive.)

Continental Portuguese Examples

1. Estas cantoras famosas estão em Portugal. (These famous singers are in Portugal.)
2. Elas são muito famosas no YouTube. (They are very famous on YouTube.)
3. As ruas famosas do Porto são lindas. (The famous streets of Porto are beautiful.)
4. Vi duas atrizes famosas no centro comercial. (I saw two famous actresses at the shopping mall.)
5. Estas marcas famosas são muito caras. (These famous brands are very expensive.)