I'm a HUGE Sailor Moon fan and after I DEVOURED that I of course wanted to venture out and see what else was good. If anyone is looking for some good Shojo you should MOST DEFINATELY give Yuu Watase a try. Emphasis on Alice 19th and Fushigi Yugi. She's witty and romantic and this is not just a tween read. The format of her stories are completely original and there is a good amount of drama in the series (I guarantee you WILL CRY) she even has a site you can download the comics from but I always prefers holding the atual book in my hand.
Hope you enjoy!