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Twenty-year-old Boston University student Olivia Culpo became the first American in a more than 10 years to wear the Miss Universe crown on Wednesday night, but her road to victory did come with a few potholes.

RELATED: Who Is Miss Universe Olivia Culpo?

If you watched closely, you would've seen Culpo trip, ever so slightly, during the evening gown competition.

While Culpo's slip went unnoticed by most, other beauty pageant contestants have not been as fortunate. Click the video to see the most notorious slips, stammers and stumbles of past beauty contests.