Why has cellulite come randomly?

I used to have a really tight butt with no cellulite.. but just recently i have one dimple on one cheek and 2 on the other =
how could these have come. im really upset!!!!! is there anyway or anything i can do to help this?
could retaion water rentention do this to me...

I have now brought a cellulite cream, a 2 cellulite machines and it all is about $100 would that help im so sad