Should I tell my mom about a diaper fettish?

I am a 14 year old and I think diapers are cool. I despreately want to wear them but I dont want to get a bad reaction and rejection from my mother. I talked to her about it when I was ten and I was able to wear them for about 2 weeks and then she duct taped them to me ant took them away to try to get me off them and now its started again. What should I do? Should I tell her or keep it a seceret and get them seceretly (If I do tell her what would be the best way?)