Sister of social media and web video star Brent Rivera who is a social media sensation in her own right. She has over 7 million followers on her lexibrookerivera Instagram account. She often collaborates with Brent on video content.
She posted her first picture to Instagram on May 26, 2012. This was approximately three years after her brother made his first YouTube video.
She has over 5 million subscribers on her Alexa Rivera YouTube channel, where she posts comedic videos such as pranks and challenges. She posted a fake pregnancy video called "I'm PREGNANT!?" in September 2019 that went on to earn over 20 million views.
She has featured Andrew Davila in videos on her YouTube channel.