Paisley Dickey

It's clear from the photos ... Paisley couldn't be happier with Bun Bun's undying presence. Why does this sound so familiar?

Adorable "Toddlers and Tiaras" star Paisley Dickey suffered a devastating loss when her little pet bunny died -- and now the little fur ball's getting STUFFED for posterity. It's pretty sad ... 4-year-old Paisley -- who first made headlines for wearing the Julia Roberts​' "Pretty Woman" hooker…