TikTok's biggest star, 16-year-old Charli D'Amelio is raking in money, and she's using some of it to invest in a banking app for teens.<div class="feedflare"> <a href="http://rss.cnn.com/~ff/rss/cnn_us?a=ImiuBn2llbk:qWsrjZlICMQ:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/rss/cnn_us?d=yIl2AUoC8zA" border="0" /></a> <a href="http://rss.cnn.com/~ff/rss/cnn_us?a=ImiuBn2llbk:qWsrjZlICMQ:7Q72WNTAKBA"><img src="http://feeds.feedburner.com/~ff/rss/cnn_us?d=7Q72WNTAKBA" border="0" /></a> <a href="http://rss.cnn.com/~ff/rss/cnn_us?a=ImiuBn2llbk:qWsrjZlICMQ:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/rss/cnn_us?i=ImiuBn2llbk:qWsrjZlICMQ:V_sGLiPBpWU" border="0" /></a> <a href="http://rss.cnn.com/~ff/rss/cnn_us?a=ImiuBn2llbk:qWsrjZlICMQ:qj6IDK7rITs"><img src="http://feeds.feedburner.com/~ff/rss/cnn_us?d=qj6IDK7rITs" border="0" /></a> <a href="http://rss.cnn.com/~ff/rss/cnn_us?a=ImiuBn2llbk:qWsrjZlICMQ:gIN9vFwOqvQ"><img src="http://feeds.feedburner.com/~ff/rss/cnn_us?i=ImiuBn2llbk:qWsrjZlICMQ:gIN9vFwOqvQ" border="0" /></a> </div><img src="http://feeds.feedburner.com/~r/rss/cnn_us/~4/ImiuBn2llbk" height="1" width="1" alt="" />