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

Yes

The spelling, meaning, and grammar of "elegantes" are identical in both Brazilian and Continental Portuguese. The only difference lies in pronunciation.

In Brazilian Portuguese, the vowels tend to be more open and the rhythm is more "syllable-timed," making the word sound more melodic and clear. In Continental Portuguese, vowels that are unstressed are much more closed (often sounding like a very short "i" or even becoming nearly silent), and the rhythm is "stress-timed," which gives the word a more clipped or condensed sound.

Brazilian Portuguese Examples

1. Essas roupas são muito elegantes. (These clothes are very elegant.)
2. Ela sempre usa acessórios elegantes. (She always uses elegant accessories.)
3. Os detalhes elegantes da decoração me encantaram. (The elegant details of the decoration enchanted me.)
4. Eles são muito elegantes em eventos sociais. (They are very elegant at social events.)
5. Eu gosto de usar sapatos elegantes no trabalho. (I like to use elegant shoes at work.)

Continental Portuguese Examples

1. Estas roupas são muito elegantes. (These clothes are very elegant.)
2. Ela usa sempre acessórios elegantes. (She always uses elegant accessories.)
3. Os detalhes elegantes da decoração encandaram-me. (The elegant details of the decoration enchanted me.)
4. São pessoas muito elegantes no trato. (They are very elegant people in their manner.)
5. Procuro sapatos elegantes para o trabalho. (I am looking for elegant shoes for work.)