General Brazilian
se exibir, ostentar, fazer alarde
Most common usage across Brazil
Rio de Janeiro
se exibir, bancar o bacana
Informal variation with 'bancar' (to act like)
São Paulo
ostentar, se mostrar
Slightly more formal register
Portugal
exibir-se, pavonear-se, fazer alarde
'Pavonear-se' is more literary; commonly used in formal contexts