"Summer lovin', had me a blast. Summer lovin' happened so fast ... I met a girl crazy for me. I met a boy, cute as can be. ..."

Oops, wrong movie. Well, sort of. For as much as recent hype has tried to equate the just-released "From Justin to Kelly" to those campy, kitchy "beach" movies of the '60s starring Annette Funicello and Frankie Avalon, truth be told, the new flick borrows much more heavily from the romantic musical comedy classic "Grease."  Really.

Set in present-day Miami during spring break week, "From Justin to Kelly" stars "American Idol"  alumni Kelly Clarkson and Justin Guarini as, well, a straight-arrow, sweet girl from Texas named Kelly and an entrepreneurial ladies'-man-with-a-heart-of-gold named Justin. Easier to follow your character's lines in the script, I suppose.

As the movie opens, Kelly is singing in an empty Texas honkytonk when her two best girlfriends, "bad girl" Alexa (Kather-ine Bailess) and "brainy girl" Kaya (Anika Noni Rose) talk her into driving to Miami for the annual spring bacchanal. Cut to Miami, where we meet spring break veterans Justin, his studly pal Bran-don (Greg Siff) and their requisite geeky pal Eddie (Brian Dietzen, who of course is gorgeous under those Coke-bottle eyeglasses and dorky sun hat).

The Pink Ladies meet the T-Birds.

"This is the game reserve, and we are the stags," bare-chested Brandon boasts to Justin. "Out there are the girl stags." I said he was bare chested, not bright.

Soon enough, Justin and Kelly lock eyes during the opening beach-party musical number, and the chase is on. Through a series of misunderstandings and some underhanded scheming by the tough-on-the-outside Alexa (can anyone say Rizzo?), Justin and Kelly first like each other, then hate each other, then like each other, all while singing, dancing and changing costumes in the hot Florida sun. When he's around the guys, he acts totally cool and standoffish toward her (not at all like the Justin who woos her by the moonlight). She ultimately decides she must shed her Sandra Dee-like persona and turn into a big, bad party girl to get her man.

"You're the one that I want, you are the one for, ooh-ooh-ooh honey. The one that I want ..."

Sorry, there I go again.

There's plenty of music--pop, R&B, hip-hop, salsa--for Clarkson and Guarini to sink their vocal teeth into. And their voices are the bright spots in the film (which visually suffers from overcast and even gray skies in many of the scenes). The dancing is on par with any video on MTV, thanks to some effective choreography by Travis Payne.

Director Robert Iscove keeps the spring break action G-rated--no sexual antics, no drugs, no outta control drinking contests, no wet T-shirt contests (there is a totally tame whipped-cream bikini contest scene that is just plain stupid).

But there is genuine chemistry between Clarkson and Guarini, and Clarkson even manages to emote feelings in a couple of her scenes. And that's about all there is to this celluloid swill.

"You know I'm just a fool who's willing/to sit around and wait for you/But baby can't you see, there's nothing else for me to do/ I'm hopelessly devoted to you..."

Oh no, not again!

Will true love win out in the end? Will Sandy and Danny--I mean, Justin and Kelly--finally kiss? Does anyone outside your 13-year-old daughter care?