If you have a tween girl in the house, you're probably aware of at least a few shows airing on ABC Family -- 'The Secret Life of the American Teenager,' 'Make It or Break It,' and '10 Things I Hate About You' spring to mind.

The network has a new show premiering June 8 that looks to grab some of that audience. 'Pretty Little Liars' sounds like a cross between 'The Sisterhood of the Traveling Pants,' 'Desperate Housewives,' and 'Gossip Girl.' But it also looks pretty good. Here are four reasons why this show will be a hit.