There are many traditional dances done at a wedding – the bride and groom's First Dance, the Father-Daughter dance, the Mother-Son dance ... How about a Brother/Sister dance? Yep, apparently that's the new trend for weddings.
The brother usually steps in if the father is absent from the wedding, for whatever reason. This can be a very sweet moment for siblings, but picking the right song is key, as most slow songs are romantic and that would be, well, really weird. (HuffingtonPost.com)