Hey everyone, I recently bought some wheel skirts but can't for the life of me figure out how these stay on. Any help? 

The car will need to have appropriate locating & retaining clips in the wheel well where the ones on the skirt will slot into. Then (on mine) there's a lever on the inside which you pull on and a hook at the top will engage with the wheelarch. Unless your skirts are like new, take the time to clean & lube the mechanism inside: makes life easier when you have to remove them.