According to the Celebrity Gossip web site Zendaya Coleman (born on September 1, 1996 in Oakland, California) wears a 34A sized bra.
The young 5' 10" actress has just barely gotten started in professional acting, and already has 8 acting credits to her resumé!
She started out on Disney 365 in 2009 (through 2012), and at the same time appeared in Good Luck Charlie (2011), Granted;Campfire Stories 2 (2011), and Pixie Hollow Games (2011); she's also been in Shake It Up since 2010.
Besides acting, she's shaking up the music world as well; she just signed on with Hollywood Records, Tweeting that it's an "Epic moment in my life…it’s official!!! HOLLYWOOD RECORDS!!!"