Some skins me and my friends have been thinking about for probably over a year now:
(my idea)
Bride 
Groom 
(another friend's idea)
Runaway Bride 
Left at the Altar 
Imagine Shyvvy in a wedding dress! With all her fire effects flower petals or something.
EnvyDragon3 votesBride: 
Groom: Fishbones
Drackolus2 votesFishbones in a tux +1
EnvyDragon4 votesPlus, they'd only have to make one skin, and it's for a champion who desperately needs one.
They could call it Red Wedding Jinx and make her ult fire a rocket-propelled bouquet.
BRBGTGBOWFLEX2 votesI do like the concept of a wedding party. Trynd and Ashe would be easy, but I like your ideas more.
Drackolus2 votesThose skins are kinda weird though, as since the Freljord update they aren't married anymore.
Legacy of Xion1 votesThey arent? Not even a political marriage?
Drackolus1 votesNo reason. Tryndamere isn't a leader of anything anymore. He's just a random angry dude.
cshakes1 votesAlso:
Bridesmaid 
(hey look a girly Lux skin!) (as well as any other lorewise fitting female characters)
Best Man 
or 