Fifth Harmony is surprising a lucky Harmonizer with the promposal of a lifetime! It all goes down tonight at 8/7c!
Hold on tight, #PromposalMania starts TOMORROW!
#PromposalMania starts Monday on MTV!
Do you love prom as much as we do? #PromposalMania
who wants to celebrate prom with austin mahone? 🙋 submit your promposal video via twitter, vine, or instagram with the hashtag #PromposalMania. check out the official rules here »
