I'm a huge fan of An American in Paris and Gigi both (as movies). I was disappointed by An American in Paris because the new plot they laid on top of the show has a deflating effect. What was fizzy and fun is now saddled with a WWII storyline that doesn't really work. Still, there's beautiful dancing throughout, and the show isn't without its charms.
Then last night I saw Gigi, hoping it would be the 1950s movie musical that really held up. Nope! Good Lord, what a mess they've made. They took the already watered down version of Gigi in the movie and then cleaned it up further to the extent that they don't actually seem to have a plot in the entire first act. By the time things actually start to happen in the second act, it's just coming out of nowhere that they're talking about contracts to be mistresses.
Add in that Vanessa Hudgens is wildly miscast and can't pull off whatever accent she's trying to do OR the little girl antics she's stuck pulling for the first act and a half. She fares moderately better as the grown up Gigi, but even then she still doesn't have the right kind of voice for the part. I don't think she's without talent, but her talents and those needed for the role seem to not have any crossover. I know that some here are in love with Corey Cott's performance, and I understand--he has a lovely voice and performs well. But he's wildly wrong for the part, coming across very young and not at all like a man who plays at relationships and toys with women. His youth gives him no arc to play.
I thought there were about four great minutes of choreography (the "Gossip" number fared best), and Clark & McGillin's two duets soared. Beyond that, it just failed again and again. Worst of all was the bizarrely re-appropriated "Thank Heaven for Little Girls." If you think the song is too creepy, then cut it. Don't divvy it up to be performed by two women for whom the lyrics barely make any sense. "These women might have a fondness and nostalgia for young girls," the creators seemed to think. "Just give them the song! Who cares about the rest of the lyrics. People will only pay attention to the title anyway, right?" Wrong.
What a chore to sit through. I'm tempted to say it would be better if you're not at all familiar with Gigi, but then I wonder what you think the plot of the show is for the first hour and a half.