Dig a little deeper, however, and you learn that was named one of Time Magazine's 25 Most Influential Teens of last year, so as well as talking the talk, the young woman - known to 'Desperate Housewives' fans as Kayla Scavo - is able to walk the walk.
"I teach young people about personal finance, people from their teens to their 30s," she tells a packed audience at the Start Up University Summit.
Bloggers often style themselves, take their own photos, attend fashion shows, write their own copy and design and edit their websites as well as provide the constant updates to their social media channels required to keep their audience engaged.
Her blog, Fox on Stocks, has proved to be hugely-successful, and the teenager has also created the My Gen Loves index, which tracks a couple of dozen firms that would be interest to the youth market, such as Urban Outfitters.
She says her investments earn her a 64pc annual return.
But the first step is to find a site that accepts guest posts.
You might have some ideas of sites where you could write, but hopefully you get a few more ideas from this list of guest blogging sites.
If offering a blogger an invitation to sit on the front row wearing their latest designs encouraged sales, why wouldn’t they?
It’s grossly insulting to suggest bloggers don’t work hard for their position.
Her age has ensured criticism from some quarters, but she has learned to laugh it off "It's always a bit of a struggle but if you're doing the right things and doing them for a reason, it kind of holds no water," she said.
Not that she hasn't had setbacks - admitting she lost a significant amount of cash in 24 hours at one point when an investment went bad. "No, I think I blocked it out, I was probably depressed," she says.
But if you avoid the common mistakes when you pitch your guest post, you have a good chance to get through with a good post.