Miss Colombia: Kleenex & Positivity ... 'Everything Happens for a Reason'

An emotional Miss Colombia was desperately trying to hold herself together backstage -- and did a pretty good job, too -- moments after she was uncrowned as Miss Universe ... telling her fans, "Everything happens for a reason."

Clutching a mascara drenched Kleenex, the beauty queen insisted she was still "happy" -- despite Steve Harvey incorrectly naming her the winner on live TV. Oops.

As for the real winner, Miss Philippines -- she was trying to wrap her head around the whole thing backstage ... saying the way it went down was "very 2015."