Two of my very favourite things about LOTRO are a) the stunning variety of mounts, and b) the ability to put together a wide range of cosmetic outfits for your character. But what I really love is combining these two things! Maybe it's just that I'm anal, or OCD, but I really, really love designing my outfit to match the horse I'm using at the moment. It also makes me twitch to be wearing colours that jar with those of my horse. >_>;; (Yeah, probably OCD.)
However, I'm sure I can't be the only one out there. Why don't we share some screenshots of our favourite mounts, and outfits we've either deliberately designed, or stumbled upon, which seem to complement them? I'll start off with a screenshot of my Huntress on her Pale Golden Summer Steed, in some threads I put together for the express purpose of looking good while I canter around on his back.