I'm with DrConners on this one. Even allowing for the OP's idiosyncratic style of posting, he's made this one really difficult for us to read.
I
think he's saying
I've read a few reviews lately [saying] she had a lovely big bum.Now I was brought up admiring small pert bums and [thinking] that's what women wanted. Opinions are divided; what's your preference?
The problem the OP gave me was right at the start of his post. I read it as writing about one particular but un-named SP with a lovely big bum, but I
think he's saying something like, "I've read reviews of a few girls lately saying they had lovely big bums. ..."