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

Yes

The word "famosos" is identical in meaning, spelling, and grammar in both Brazilian and Continental Portuguese. The only differences lie in pronunciation:

• Vowel Reduction: In Continental Portuguese, unstressed vowels (like the "a" in famosos) are much more "closed" or reduced, sometimes sounding almost swallowed. In Brazilian Portuguese, vowels are generally more open and clearly articulated.
• Sibilance: In Continental Portuguese, the "s" at the end of a syllable is almost always pronounced as "sh" ([ʃ]). In Brazilian Portuguese, this varies by region; for example, in São Paulo, it is a sharp "s" ([s]), whereas in Rio de Janeiro, it is a "sh" ([ʃ]) sound.

Brazilian Portuguese Examples:

1. Eu vi vários famosos no shopping. (I saw several celebrities at the shopping mall.)
2. Os atores famosos chegaram na festa. (The famous actors arrived at the party.)
3. Eles são muito famosos no Brasil. (They are very famous in Brazil.)
4. Você conhece esses famosos? (Do you know these celebrities?)
5. Os cantores famosos estão no palco. (The famous singers are on stage.)

Continental Portuguese Examples:

1. Eu vi vários famosos no centro comercial. (I saw several celebrities at the shopping center.)
2. Os atores famosos chegaram à festa. (The famous actors arrived at the party.)
3. Eles são muito famosos por aqui. (They are very famous around here.)
4. Tu conheces estes famosos? (Do you know these celebrities?)
5. Os cantores famosos estão no palco. (The famous singers are on stage.)