Aquamarine (PG) <!-- none onestar twostar threestar fourstar fivestar -->

Tweenage girls need their diversions like everyone else, and this pubescent fantasy comedy might just fit the bill. Two Florida tweens (Emma Roberts and Joanna "JoJo" Levesque) drool girlishly over a hunky lifeguard but then find bigger fish to fry when a real, live mermaid called Aquamarine (Sara Paxton) washes up in their swimming pool. Fortunately, she can swap her tail for legs, and thus accompany her new pals as they visit the mall, pig out on ice-cream and, like, totally obsess over boys.

Basically a riff on every pubescent girl's desire for a cool older sister, it provides innocent if rather drippy fun. At least I think it's innocent.