Alexis won the people's choice award competing against three other entrepreneurs more than twice her age at the second annual Pitch event.
Pitch 2015 placed entrepreneurs in front of four panelists, and a crowd of potential investors, to sell their business ideas.
Alexis' idea for FashionCircle draws on the strong influence social media plays in young people's purchasing decisions and applies it to the world of fashion.
“I'm all over social media, and I realized if we had one place to share fashion people would use it,” she said.
The eventual app – which still needs to be created – would allow users to share their most recent clothing purchases with their friends.
Their online social circle can then comment on that purchase, and perhaps be inspired to buy something similar.
If someone were to buy a dress from the retailer Forever 21's website, for example, the company could pay for FashionCircle to automatically add a referral link.
Anyone who clicks on the link can purchase the same dress, or find something similar.
Alexis said her father, Jeff Fuller, played a big role in encouraging her own ambitions to be an entrepreneur.
“My dad has nurtured me in that entrepreneurial spirit,” she said. “He's always pushed me to run with a good idea. I didn't let being 17 be a barrier for me.”
The senior Fuller is a successful entrepreneur, and the president of Fuller Industrial, a Sudbury-based mining supply and services company.
Other start-ups at Thursday's pitch event included Bait-2-Go, which makes a versatile and portable bait holder for fishing enthusiasts, and Clickmox Solutions, a company that has developed a 3D mapping technology aimed at the mining sector.
Clickmox president Syed Naeem Ahmed said his company's 3D mapping technology can help autonomous vehicles navigate areas where GPS isn't available.
Mississauga's Nisha Sarveswaran also pitched her company Ambience Data, which develops an air quality monitoring system that municipalities or even individuals can use to determine measure airborne pollutants in their immediate vicinity.
