Should I really write more commments? It's cute the the core, the bust detail looks great for 16 year old who might be still not fully formed and feeling secure about her body. A-line skirt looks perfect for the occasion and I personally hardy see a girl wear something other that this silhouette on sweet 16.
Wonderful sweet 16 dresses: http://www.tidebuy.com/c/Sweet-16-7773/
Have a nice day,