There's nothing quite like a surprise toast on your wedding day to make you smile - but this incredible musical number will make you laugh till you cry.
For their sister Caitlin's California wedding, maids of honour Kelsey and Maddie Hallerman went far beyond the usual duties of cracking a few jokes, shedding a few tears and asking the crowd to raise a glass to the new couple: they devised a five-minute long musical medley all about their sister and her new husband John.
So they can't exactly sing like Adele - but who cares? Before telling the crowd "We're not good, don't worry", the Hallermans launch into an adapted version of Tracy Chapman’s Give Me One Reason, before hilariously changing the words to the Jackson 5’s I Want You Back, Backstreet Boys’ Everybody and Michael’s Jackson’s Black or White to pay tribute to their sister and tell the story of her childhood, relationship with John, and finally the proposal.
Gems from their genius lyrics include "If he's everything you need you'd better lock that boy down now" and "Jonathan and Caitlin did housework that day/ He dropped her to the dump to throw things away".
The audience loves every moment of the sisters' confident and funny singing, punctuated by occasional bursts of laughter - and audience members can be heard to say "this is the best thing I've ever seen" and "this is going to go viral on YouTube".
Even if you're not big on wedding toasts, watch this just to see the reaction of the newly married couple, who look like they could genuinely pass out from laughing so hard.