WATCH: Fifth Harmony Helps Fan With the Perfect Promposal

Fifth Harmony Helps Fan With The Perfect Promposal
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A lucky Harmonizer got the once in a lifetime opportunity to enlist the help of Fifth Harmony for the perfect promposal. 

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The group helped a girl named Tristine ask her friend, Jane, to prom. Tristine thought her promposal would come in the form of a video package from Fifth Harmony but instead the singers showed up in person. 

As part of MTV's "Promposal Mania," the fivesome put on a cute surprise performance of their newest single "Worth It" to convince Jane she should go with Tristine to prom. 

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After that performance, of course, Jane said si

Check out the promposal going down: 

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