The Miss Universe 2015 fiasco was not the first in the Pageantry World. Check this clip from Mrs. WORLD 2006..
https://m.facebook.com/story.php?story_fbid=10154008712399245&id=96738939244
This time it was the reigning winner's mistake. The host was able to announce the rightful winner Mrs. RUSSIA , however, the reigning winner gave the crown to the 1st runner-up Miss Costa Rica.
After the correction was made it was like Miss Universe 2015. Majority of the candidates went to Miss Costa Rica to console her and just a handful went to Russia.