Baby phat jeans sizing compared to apple bottoms, dereon and rocawear jeans.?

I wear size 1/2 in Dereon jeans (this is their smallest size and sometimes is too big on me), size 3 in Rocawear (this is their smallest size and I have only tried 1 pair but it fits me good) and size 3 in Apple Bottoms (Apple Bottoms jeans fit me the best) so what size should I get in Baby Phat jeans? and are Baby Phat jeans are similar cut/style to Dereon, Rocawear or Apple Bottoms? Thankyou