Lavaxgrll, whose real name is Mariah Casillas, is a Mexican-born social media influencer and TikTok star best known for winning the third season of the YouTube reality competition series Reality House.
She started her online career as a Twitch streamer and grew her presence across TikTok, Instagram, and YouTube, becoming one of the more recognizable names in the American-based influencer space.
Who is Lavaxgrll?
Lavaxgrll is a social media influencer, TikTok creator, Twitch streamer, model, and gamer originally from Mexico. She currently lives in Los Angeles, California.
Her online handle, Lavaxgrll, became her public identity across every platform. By the time she appeared on Reality House, she had already built a sizable following through her lip-sync and comedy videos on TikTok.
She won the third season of Reality House in 2021, taking home the $100,000 grand prize. That win gave her mainstream visibility beyond her existing social media audience.
Outside of content creation, Mariah works professionally as an accountant. That dual career, between social media and a finance profession, sets her apart from many influencers of her generation.
She has partnered with brands including Vixen and Reflex over the course of her career. Those brand collaborations have added to her income and expanded her public profile.
Early Life of Lavaxgrll
Mariah Casillas was born in Mexico and later relocated to the United States, eventually settling in Los Angeles, California. She grew up in a Mexican household, and her cultural background has stayed present in her online identity.
Her parents have not been publicly named. Mariah has shared little about her family background in interviews or on social media, keeping that part of her life private.
Not much detail has emerged about her childhood education or early formative years. What is known is that she developed an interest in gaming and content creation at a young age, which led her toward Twitch as her first platform.
Los Angeles became the base from which she built her career. The city’s large Hispanic community and its connections to the entertainment and influencer industries made it a natural fit.
Lavaxgrll Age / Birthday
Lavaxgrll is 26 years old as of 2026, born on January 22, 2000. Her zodiac sign is Aquarius, a sign often linked with independence, creativity, and a strong desire to connect with others.
By her mid-twenties, she had already won a major reality competition and grown a large following across multiple social media platforms.
Lavaxgrll Ethnicity and Nationality
Mariah holds Mexican nationality through her birth in Mexico. Her ethnicity is a mixed background of Hispanic, Chinese, and French ancestry, a combination that she has referenced in public profiles and interviews.
That diverse cultural blend has shaped her personal style and the tone of her content across platforms.
Lavaxgrll Height and Weight
Lavaxgrll stands at 5 feet 4 inches tall, approximately 163 centimeters. Her weight has not been publicly confirmed. She has a slim build, which she often highlights in modeling content shared across her Instagram accounts.
Lavaxgrll Career
Lavaxgrll built her career from the ground up, starting as a gamer on Twitch before moving into TikTok and Instagram. Her journey from small streamer to Reality House winner took just a few years.
Twitch and Early Content Creation
Mariah began her public online presence as a Twitch streamer. She used the handle lavagrll to stream video games and build an early fanbase on the platform. Her gaming content attracted a loyal audience drawn to her personality and commentary style.
During this period, she also launched an Instagram account. She posted modeling photos and lifestyle content alongside her gaming streams. That combination of gaming and modeling content helped her reach different segments of the online audience.
Her early TikTok account, under the handle yvettemariahh, was later deleted. She eventually created her current TikTok presence under the Lavaxgrll name. From there, she grew her following significantly through lip-sync videos, comedy clips, and relatable content about everyday life.
Reality House Season 3 and Breakthrough
In 2021, Lavaxgrll appeared as a contestant on Reality House Season 3, a YouTube reality competition series. The show pitted ten social media influencers against each other in a Big Brother-style house, competing for a $100,000 cash prize.
She went on to win the competition, defeating nine other influencers and taking home the full prize. That victory marked a turning point in her public profile, drawing coverage across celebrity and entertainment blogs and significantly boosting her social media numbers.
Reality House provided her with a platform beyond TikTok’s algorithm-dependent reach. The show’s large YouTube audience introduced her to viewers who might not have found her content otherwise.
Her win confirmed her as a competitive personality, not just a content creator. Audiences responded to her confidence and engagement style during the competition.
Modeling, Brand Work, and Current Activity
Following her Reality House win, Lavaxgrll expanded her brand partnerships and modeling work. She signed with brands including Vixen and Reflex, both of which aligned with her aesthetic and audience demographics.
Her Instagram presence grew alongside those partnerships. She runs two Instagram accounts, @lavaxgrll and @lavagrlll, which together drew over 500,000 followers at their peak.
In 2019, she launched a YouTube channel featuring vlogs, Q&A sessions, and makeup tutorials. The channel gathered a few thousand subscribers but went inactive after its early run.
As of 2026, Mariah continues to post content across TikTok and Instagram. Her gaming activity on Twitch has slowed compared to her early years, but she remains active on her primary platforms.
Lavaxgrll Career Stats
| Platform | Handle | Type of Content |
|---|---|---|
| TikTok | @lavaxgrll | Lip-sync, comedy, lifestyle |
| @lavaxgrll / @lavagrlll | Modeling, lifestyle | |
| Twitch | lavagrll | Gaming streams |
| @lavagrll | Fan interaction, updates | |
| YouTube | Lavaxgrll | Vlogs, Q&As, tutorials |
Lavaxgrll Boyfriend
As of 2026, Lavaxgrll has not confirmed a public relationship. Earlier social media posts hinted at a romantic relationship, and she shared screenshots of conversations that fans believed involved a boyfriend. However, she later announced in a TikTok video that she had ended that relationship.
No further relationship has been publicly confirmed since then. Mariah has kept her personal life away from her content for the most part.
Lavaxgrll Net Worth
Lavaxgrll’s estimated net worth is $500,000 as of 2026. Her income draws from several streams, including social media sponsorships, brand collaborations, gaming content, and her professional accountancy work.
Her Reality House win added $100,000 directly to her earnings in 2021. That prize money represented a significant one-time boost to her overall financial picture.
Brand deals with companies like Vixen and Reflex contribute to her ongoing yearly income. Sponsored posts on her Instagram accounts, which together hold a large combined audience, form part of that partnership income.
Her accounting career provides a steady professional income alongside her influencer revenue. That combination of stable employment and creator income has helped her build a balanced financial base.
Lavaxgrll Social Media
Lavaxgrll maintains active accounts on multiple platforms. On TikTok, she posts under the @lavaxgrll handle and has built a following through comedy, lip-sync, and lifestyle videos that have earned tens of millions of combined views.
On Instagram, she runs @lavaxgrll as her primary account, sharing modeling photos and personal updates. Her second account, @lavagrlll, serves a similar purpose and together the two accounts cover a broad audience.
On Twitter, she operates multiple accounts, with @lavagrll as her original handle dating back to 2014. She uses Twitter mainly to interact directly with fans and share exclusive updates.
Conclusion
Lavaxgrll, born Mariah Casillas, built a cross-platform following through years of gaming streams, TikTok comedy, and Instagram modeling before her 2021 Reality House win gave her a breakout moment in front of a broader audience.
Her career, balanced between professional accountancy and social media influence, reflects a practical approach to life in the creator economy.