They look up to "mega-influencers" like Virginia Fonseca and stars who started young, such as Larissa Manoela and Maisa Silva .

Why 13? Culturally, it marks the official end of the "girls" phase and the tentative first step into being a "young woman" ( moça ). These parties are rarely small affairs. They are often lavish events featuring professional makeup artists, hairstylists, expensive gowns, and DJs. It is the moment the menina de 13 is introduced to society not as a child playing with dolls, but as an individual with social capital.

These portrayals shape how Brazilian society views 13-year-old girls: as emotionally intense, curious, and vulnerable to external influence.

The menina de 13 controls an estimated R$ 1.5 billion annually in direct and indirect spending (clothing, streaming subscriptions, concert tickets, beauty products). Marketers have coined the term "Teen Power" specifically for this Brazilian cohort.

A typical "Brazilian girl" vibe includes flowy dresses, tropical prints, and the ubiquitous Havaianas flip-flops .

When American singer Melanie Martinez—with her infant-like aesthetic and dark lyrics exploring childhood trauma—found a second home in Brazil, it was the menina de 13 who built that bridge. Brazilian tweens translated her lyrics, created fan edits with anime clips, and turned her into a stadium act. This proved that the Brazilian teenage girl has impeccable curation power, often spotting global trends six months before they hit the mainstream.

The rise of digital influencers has arguably given 13-year-old Brazilian girls more power than ever before. Platforms like YouTube, TikTok, and Kwai (extremely popular in Brazil’s periphery) feature young creators who speak directly to their peers.