“Just My Luck” is former Disney darling Lindsay Lohan’s attempt to move out of being a teenage queen and enter more adult, albeit Sandra Bullock/Meg Ryan, territory. Unfortunately, this “Freak Friday” meets “Big” crossed with “13 Going on 30” romance isn’t exactly the “While You Were Sleeping” or “When Harry Met Sally…” success the bubbly pop star thespian was hoping for. It’s more “French Miss” than “French Kiss,” and even though Lohan shows a great deal of spunk and pluck (and an admittedly cute flair for physical comedy) this wistful fairy tale is remarkable only for how unremarkable it truly is.

Not that the actress doesn’t try. Playing plucky public relations worker Ashley Albright, Lohan has a perky charm and a winsome grace that’s utterly charming. While not remotely her best work (see “Mean Girls” or Robert Altman’s upcoming “A Prairie Home Companion”), she’s certainly easy to watch, especially when sharing the screen with costar Chris Pine (playing her unlucky opposite Jake Hardin). Together, these two have wonderful romantic chemistry, the duo believably tangoing one round the other trying to discover the quickest avenue headed for young love.

It’s the script – or rather the lack of one – that turns “Just My Luck” into such a disposable sitcom-like mess. Written by committee (six writers are credited), this fanciful farce is as obvious and humdrum as they come. Every corner is a forgone conclusion, everything reeking of formula and as hard as the actors try nothing they do helps. The stars work overtime but it’s all for naught, the movie as completely forgettable as the lackluster trailers have hinted at for months.

The basic storyline is pretty simple. Ashley is the luckiest girl on the planet, able to acquire a cab during rush hour, have Sarah Jessica Parker’s dress delivered mistakenly to her apartment on the eve of a big date and stage celebrity-filled events with zero effort and oodles of panache. This all changes the night she meets, and kisses, Jake. Jake’s the world’s unluckiest human, his karma so bad if he finds a five dollar bill in the trash it’s probably covered in humungous pieces of sticky dog poop. But after kissing Ashley suddenly he can do no wrong while she can’t even fathom a right, their luck swapped leading one to success he never imagined and the other to failure she’s never known.

It doesn’t take a rocket scientist to figure out what’s going to happen next. Needless to say, love ends up blossoming between the opposites, and even though one’s selfishness threatens to derail the potential bliss alls well that ends well and bliss is a definitive guarantee. While Ashley and Jake are sure to take their lumps, they still learn their life lessons with a smile, love waiting patiently for both out on the romantic battlefield for all to see.

The problem is that a random episode of “My Name is Earl” (or even the lackluster “The King of Queens”) has more wit and ingenuity than this picture. The jokes are all telegraphed, the only thing missing a laugh track supplying the recycled giggles. While Lohan and Pine make a great team, I can’t begin to say I cared what happened to either one of them, and by the time the movie reached its rock concert climax I was almost ready to call it a night and take a nap.

Still, this will work for some people, especially when it (quickly) makes its way onto DVD. The film is just diversionary enough to not hate yourself too terribly in the morning for sitting through it, and as silly and juvenile as much of it is the entire cast (especially a remarkably game Missy Pyle) does their best to make the most of it.

Not enough, too be sure, but also not enough the other direction to get all venomous and tomato throwing about, either. While this won’t break the bank at the box office (it will disappear within the month) or get people to change their opinions about the star it’s also not going to harm her image (or her fan base). With any luck whatsoever, audiences will quickly forget about “Just My Luck” about the same time Lohan gives them something worthy of their attentions. And, wouldn’t you know it, lucky for her “A Prairie Home Companion” hits theaters the first week in June. How’s that for luck?