I would go with a large. I think that most diapers the larges start around 25-26 lbs. But that's just my As for inserts, it depends on what you like. We love microterry inserts the best.
They call me mommy
"Sissy" 6-02, "Bubba" 5-05, "Ninny" 3-08, "Kalli" 3-10
Currently have NO kiddos in diapers! But I still love this community!!