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.

Give these girls their own show! Singing, dancing maids of honour create epic medley for their sister's wedding toast