A side hustle can change your entire life. That is exactly what happened to Demi Marchese, a fresh college grad who launched a small fashion idea with only $800 in 2015. What started as a fun side project quickly exploded into a $35 million-a-year powerhouse known as 12th Tribe.

However, Marchese didn’t start with deep pockets or big investors. She built 12th Tribe with less than the cost of a new laptop. That small investment gave her the freedom to test her ideas with low risk, but what really set her apart was how fast she acted.

She treated her side hustle like a serious business from day one, even when it was just her, a laptop, and a handful of product samples.

Demi / IG / What makes Demi’s journey stand out is how she used her limited budget as motivation instead of a limitation.

With only $800, every decision mattered. She had to get creative with sourcing, branding, and marketing. Instead of waiting for the “perfect time” or extra funding, she went all in with what she had. That boldness set the tone for how 12th Tribe would grow.

How She Turned a Side Hustle Into a "Monster"?

The side hustle grew faster than she could have imagined. Marchese called it a “monster” because of how quickly it scaled. What started in her college apartment turned into a brand recognized nationwide. But this wasn’t a happy accident. She credits her success to setting aggressive sales targets from the very beginning.

These weren’t soft goals to “see what happens.” They were intense, structured, and tied to specific actions.

Those targets gave her business direction. Every campaign, every launch, and every customer interaction was designed with those numbers in mind. That focus on growth kept her from coasting. Even when sales were strong, she pushed harder. Instead of being comfortable with a little success, she kept raising the bar, and her results kept climbing.

“Intense Sales Targets” Fueled Explosive Growth!

12th Tribe is now bringing in $35 million in annual revenue and more than $250 million in lifetime sales. That scale is rare for any fashion brand, but even more impressive for one that began as a side hustle with pocket-change funding.

Demi / IG / Marchese tapped into a generation of shoppers looking for bold, trend-forward fashion at the right price, and she delivered consistently.

The company’s growth also shows how powerful discipline can be in an industry that often looks like it runs on luck. Marchese didn’t stumble into viral fame. She built a system. She focused on numbers, set deadlines, and measured everything.

While creativity fueled her brand’s identity, strategy fueled its expansion. It was the balance of both that made 12th Tribe unstoppable.

Another key factor was her direct connection with her customers. Starting small allowed her to understand her audience in real time. She listened, responded quickly, and adapted her products to what her community wanted. That loyalty helped her grow fast without spending huge amounts on advertising.

People felt part of the brand, and that organic support became one of her strongest marketing tools.